In a previous blog post I discussed tips for common weed identification, but hinted at a second installment covering plants that don’t quite qualify as weeds. After all, a weed is just a plant out of place! Some lovely native flowers have ‘weedy’ tendencies but don’t deserve total eradication from the garden. Here is an introduction to a few of those characters, and what you can do to control them when weeding your gardens.
Spiderwort – Tradescantia ohiensis or T. tharpii
Ranging from true blue to purple, spiderwort germinates readily from seed and can quickly take over a garden. I find it in every garden we have here at the Arboretum. Hairy leaves with purple veins and a pronounced fold along the mid vein are easy ways to identify spiderwort. The short stemmed species (T. tharpii) is a nice filler around other perennials and will grow as a ground cover. T. ohiensis is taller and more unwieldy, crowding out desirable plants. When Arboretum volunteers are weeding, I ask them to remove all but a few intentional clumps. I cut the flowers frequently to prevent those clumps from seeding.
Prairie Petunia – Ruella humilis
So petite but not so polite, Ruella spreads rapidly and travels all over the garden, thanks to its exploding seeds pods. White, pink, or lilac flowers are borne on purple stems with deep green foliage. With a mainly prostrate habit, this creeper makes a nice border plant, especially spilling over rock edging. Deep rooted, it is hard to pull once mature. If these fellas get started in your garden, regular weeding won’t do it – you will need to dig them out. But maybe they are the free, fast growing ground cover you have been looking for!
Curly Cup Gumweed – Grindelia squarosa
Gumweed can be found growing north of our Prairie Pavilion, but not for long! I am overdue in weeding them out. This western US native is cheery and adorable, but too wild to be running amuck in our formal gardens. I’d be much happier to see it growing in our prairie or around the pond edge. If you have the space, don’t pull them all out – it is attractive to pollinators and can be controlled by cutting the flowers before they seed.
These are just a few of the weedy native flowers that your soil’s seed bank may be harboring. Perhaps they can find a happy home in your garden, as long as you are willing to tame their bad habits.
At FloraKansas Native Plant Festival our customers were surprised to see we offer Kansas native ferns. Perhaps they were surprised to hear Kansas even had native ferns! With our hot, dry summers and deep-freeze winters, Kansas does not seem like hospitable environment for delicate, shade loving plants. However, we have several naturally occurring fern species in the state that are hardier than you might think. They are fascinating to observe growing in the wild, but also make excellent additions to your shade garden.
Royal Fern
Osmunda regalis var spectabilis
According to fossil records, the royal fern family (Osmundaceae) dates back about 365 million years. 3 to 4 feet tall (shorter in poor, drier soil), this fern becomes a large and impressive specimen in the shade garden. O. regalis var spectabilis grows happily in the far eastern part of Kansas and throughout the eastern third of North America. Royal fern has attractive bright green foliage and rust colored spore plumes. It prefers moist, somewhat acidic soil and shade though it can handle sun if the soil is kept wet. This fern can live up to 100 years if planted in the right location!
Christmas Fern
Polystichum acrostichoides
This festive native fern grows in far southeastern Kansas. According to Missouri Botanical Garden, it “…typically grows in a fountain-like clump to 2′ tall and features leathery, lance-shaped, with evergreen (green at Christmas time as the common name suggests) fronds.” If you love boston ferns but want something perennial, this is a great option. When planted in an average moisture, shaded area it will spread slowly to form a colony.
Sensitive Fern
Onoclea sensibilis
Onoclea is unique native fern, with arching fronds and oblong, creeping rhizomes. Getting its name from sensitivity to frost, O. sensibilis is surprisingly hardy. It can easily survive the cold dry winters in Kansas, Nebraska and even the Dakotas. This species is native to the eastern half of North America as well as far eastern Russia and China. According to Wikipedia, you can help your ferns survive the winter by leaving dried fronds on the plant instead of clearing them away.
Over the past five years, we have seen some interesting things happen regarding native plants. People are learning about native plants and matching plants up with their local conditions. More and more people are seeking them out to include in their landscapes. Here are a few of the emerging garden trends regarding native plants:
Wildlife-friendly plants
I keep coming back to this idea of beautiful AND good. Aesthetics are important and we all want attractive landscapes, but of equal importance is this feeling that what we are doing is good for everyone and everything. It can be intimidating to change the way you garden or landscape. Choosing plants just because they are visually appealing simply isn’t a good enough reason anymore. Creating a habitat using plants that are adapted to your site is a far better approach to landscaping. Designs that have attractive combinations of wildflowers, grasses, shrubs and trees may initially capture our imaginations, but more and more people are wanting these plants and landscapes to provide additional benefits. Our gardens must now not only look good, but also do double duty to provide for pollinators, attract birds and other wildlife, develop habitat and positively impact the environment.
Pollinator gardens
It has taken a while, but native plants are finally getting the attention they deserve. They are viable alternatives to many of the overused plants you see in so many landscapes. There are literally hundreds of plants that will fit into your landscape design. Whether it is a true native species or “nativar” (a hybrid or new selection of a native plant), these plants offer qualities that will beautify the landscape and attract pollinators, too. For people who live in prairie country, it may be easy to take our native plants for granted. Yet these plants, with their simple form and subtle beauty, can make attractive additions to the home landscape.
Water-wise plants
We don’t think often enough about the water we use. It is a precious commodity. Remember the 2011 and 2012 drought in Kansas? We were using tremendous quantities of water to keep our landscapes alive. It made us evaluate each plant according to its response to these extreme conditions. Obviously, some plants did better than others and we lost some plants those years. It made us think critically about our plant choices and irrigation practices. A beautiful and resilient landscape that uses little, if any, supplemental water is an achievable result. A few changes like adding some native plants can make a big difference.
It seems to me that these trends for 2019 have something obviously in common – native plants. Native plants are not the “be all” and “end all” solution, but they provide a good starting point to solving some problems you encounter in the landscape. With so much to consider when designing or redesigning your landscapes, don’t overlook native plants. You will be rewarded time and again by their unique beauty and deep roots.
Over the past several months, as I have been working on landscape designs for homeowners, I have been noticing a few trends.
First, homeowners are increasingly interested in native plants. They understand the benefits of utilizing native plants both to the environment and the wildlife they are trying to attract. The advantages of native plants have been noted in previous blog posts.
Secondly, they want something interesting happening/blooming in their landscape throughout the year.
Thirdly, they want native grasses incorporated into the design.
To help fill these needs, I have come up with a list of my favorite plants for the landscape that I try to work into most designs. If you need help with your landscape or have questions about using native plants, give us a call or come to the FloraKansas Native Plant Festival. We would be happy to visit with you.
As you know, each landscape is unique and only a handful of these plants will work in specific yards, but they are all hardy and easy to maintain. These sun loving perennials have beauty and landscape value too. Here are some of my favorite native or adaptable plants to use for a sunny landscape in South Central Kansas:
Switchgrass (Panicum ‘Northwind’)
This grass is incredible! Do you need a vertical element in the landscape? Then this is the grass for you. The upright clumps have wide steel blue leaves that turn a golden yellow in the fall. The unique flower panicles emerge in September and are held towards the middle of the clump close to the foliage. Ultimately, it reaches four to five feet tall. I love this grass because it will not fall over.
Threadleaf Bluestar (Amsonia hubrichtii)
This is an all-season perennial with fantastic ornamental features that make it stand out from other wildflowers. In May and June, clusters of small powder blue, star-like flowers top the strong stems. The stems are encircled with soft, narrow leaves resembling pine needles, making each plant look like a small shrub with feathery texture and incredible fullness. I have found them to be extremely hardy, drought tolerant and very low maintenance. Other forms worth considering are Amsonia ‘Storm Cloud’ and Amsonia ‘Butterscotch’
Prairie Dropseed (Sporobolus heterolepis)
At one time, this was one of the top selling grasses nationwide. It is a favorite of mine because it is long-lived and tough. It is so tough they are planted en masse in street medians. The fine textured leaves and airy, fragrant panicles are a nice addition to any landscape. Each clump can reach 12-18 inches wide and up to 24 inches tall. The entire plant turns shades of orange and yellow in the fall, providing multiple seasons of interest. It is great in a border, as a groundcover, in an informal prairie setting, or as an accent to other short or mid-range perennials. I like to mix it with short heath asters, purple poppy mallow, evening primrose or Missouri black-eyed susan.
Purple Poppy Mallow (Callirhoe involucrata)
Some like it hot, but these like it really hot. The deep tap root of Purple Poppy Mallow sustains it during times of drought. These roots are starchy and supposedly taste like a sweet potato. (I don’t know if I am that hungry, but it may be worth a try.) The magenta cup-like blooms appear throughout spring and into summer. I like to interplant them with low grasses or shorter perennials that bloom later in the season, such as blazing stars or goldenrods. The stems hug the ground and ultimately spread 24-36 inches wide and 6-12 inches tall.
Penstemon ‘Dark Towers’ (Penstemon digitalis)
I love this penstemon in the perennial border. The pink flowers in spring have just a blush of white and develop interesting seed heads. It adds outstanding form and texture to any landscape throughout the year. Penstemon ‘Dark Towers’ is a beautiful selection of smooth penstemon with reddish-purple foliage that is attractive even when blooming is complete.
Aromatic aster (Aster oblongifolius)
This diverse wildflower grows throughout the state, and is more drought-tolerant than other aster species. Its name alludes to its fragrant purple/pink flowers and foliage that exudes a pungent aroma. This species typically grows about two feet tall, but shorter varieties also exist. Garden-worthy varieties include ‘Dream of Beauty’ (one foot tall with pink blooms), ‘October Skies’ (2’ x 2’ with light blue flowers) and ‘Raydon’s Favorite’ (3’ x 2’ with light blue flowers).
Butterfly Milkweed (Asclepias tuberosa)
Butterfly milkweed is a stout one to two foot tall perennial with a deep, coarse, fibrous root system. Flowers vary in color from deep orange-red in the eastern part of its range to lighter orange and finally yellow farther west and south in Kansas. Unlike the numerous other milkweeds found in Kansas, butterfly milkweed does not exude a white milky sap when the stem is cut or a leaf is removed.
Do your garden a favor and include some butterfly milkweed. Its many ornamental and functional assets, plus its rugged character will make it a focal point in the summer garden for years to come. Plus, you will be rewarded as pollinators such as Monarchs seek out this beautiful native wildflower.
The Arboretum greenhouse is warm and alive this time of year, beginning to fill up with stock for FloraKansas Native Plant Festival. FloraKansas is our largest fundraiser, and takes a lot of prep work. Luckily, I relish my time spent time in the greenhouse, so it is a welcome change of pace from the snow-shoveling and office work of winter. Here is a behind the scenes look at how it all comes together in just a few short months.
Each spring we receive about 15,000 plants. Many plants come to us as plugs — pre-grown plants that are transplanted into sale-size pots. This is an economical and user-friendly way for us to plant thousands of plants without the risk associated with caring for tiny seedlings. We order plugs from lots of native plant nurseries around the country and around the state to ensure a nice variety for our customers.
Sometimes we seed our own plants with seed we have collected or purchased from a trusted source. Though this is very tedious and time consuming, it is so rewarding to see those little sprouts poking through the soil! We then use a fork to tease apart the tiny roots and plant them into individual pots.
We heat the greenhouse with industrial heaters during the cold nights of February and March and vent with large fans during the day. Keeping plants at optimal growing temperature helps them green up in time for the sale. Surprisingly, during a sunny day in spring, temperatures in the greenhouse can reach 90 and 100 degrees Fahrenheit quickly, even though it is cold outside!
FloraKansas would not be possible without volunteers. They transplant, water, sweep greenhouse isles, load and unload trucks, and so much more. I couldn’t possibly do all of those tasks by myself! And that doesn’t even include the many volunteers who help us on the days of the event, cashiering and helping customers to their cars. FloraKansas is a great time to be an Arboretum employee — surrounded by enthusiastic volunteers who support our mission, it makes the job easy. If you would like to volunteer at FloraKansas or otherwise, click here for more information.
I hope to see lots of our blog readers at the spring sale! It is a wonderful time to talk face to face with our members and supporters. Come see us soon, and pick up a few native plants while you are at it.
As we persevere through the winter months, I am thankful February only has 28 days. This short month seems to go on and on. If we could get past February, then spring is right around the corner. I know there is still plenty of winter left, but by March, things begin to change.
“Thirty days hath September, April, June, and November. All the rest have thirty-one, except for February, which is cold, so make it go quick.”
– adapted from an English nursery rhyme
That is not exactly how the saying goes, but as I look out my window this cold morning, I am thankful February is short. It also makes me aware of the importance of creating a garden that can be enjoyed even in winter. A four-season garden takes planning. Here are some ideas to think about that will make your landscape more robust and interesting in all seasons of the year:
Add a variety of plants
Typically, gardens are “one hit wonders”. They excel in spring or early summer, but fade the rest of the year. This is mostly because our gardens are heavily planted with early season bloomers and short on plants with late season interest. We choose plants to include in our gardens that are blooming in the gardens centers we visit and neglect grasses and late season perennials that are not blooming yet. A four-season garden incorporates diverse varieties with staggered bloom times and textural elements.
Plants out of bloom
It is natural to first notice the blooms of perennials. We all want wildflowers that look beautiful in bloom and attract a bunch of different pollinators to our gardens. However, with a four-season garden, equal importance needs to be placed on plants as they emerge in spring or after they bloom. Do these plants have interesting forms, textures, seed heads and architecture that can be highlighted or emphasized? The secret to achieving a four-season border is selecting plants that continue to provide an attractive overall shape both before and after flowering.
Create layers
Plants live in communities. Within these natural communities, all the gaps are filled, from floor to canopy. Ground covers intertwine around larger perennials, which grow up to the under story trees and shrubs. Generally, taller trees provide the backdrop to your gardens, but the layered effect can be achieved with wildflowers, grasses and a few strategically placed shrubs. Planting in layers mimics the densely planted prairies or savannas we admire. Layering plants with differing heights, textures, forms, architecture and bark is attractive any season of the year.
Do your home work
It takes time to learn what plants grow best in your landscape. Make a conscious effort to see the gaps in your garden. Plan to add elements that provide interest at times in the year that are weaker or sparser than desired. As always, match plants to your site conditions. Many plants have multiple seasons of interest besides when they are in bloom. Learn how to incorporate these perennials.
It’s not easy being brown
Each season has a unique beauty. Winter is often overlooked but the different hues of brown along with textural elements and architecture add interest to the landscape. These subtle foliar elements are great as they move with the wind or capture snow that falls. A few focal points that stand out in the stark winter landscape can make a difference in completing your four-season garden.
Winter can seem long, but that doesn’t mean you cannot enjoy your garden. Four seasons of interest and beauty can be just a few additional plants away. I love to see the birds eating the seeds from the wildflowers outside my window. The grasses moving with the wind are nice, too. I know spring is coming, but for now, I appreciate what I see.
As a horticulturist and a dog lover, life can be a little ‘ruff’. I dream of a beautiful, lush landscape of gorgeous plants and well-tended lawn, but we all know how dogs wreak havoc on our outdoor spaces. Even my sweet pooch, well behaved and trained to a T, inadvertently tramples my plants and upends my #gardengoals with every enthusiastic game of frisbee.
But there is light at the end of this long, muddy, paw-printed tunnel — with some careful planning, you can love your dog and your yard.
Safety First
This should be a no-brainer, but bears repeating: Keep harmful chemicals and pesticides out of a dog-friendly yard! Even if you think your dog doesn’t “go over there that often”, or you are pretty sure the treatment “will dry by the time she gets there”. Remember that your doggo is in direct paw-to-ground contact with the plants and soil they walk on – not to mention the digging, rolling, and rooting around that pups do on a daily basis. Some studies show a growing link between lawn-care products and cases of canine lymphoma. So, if you or your lawn care professionals are applying ANY pesticides or herbicides, do your research and call your vet to make sure you are making a safe choice for your canine friend.
Do Your Homework
It is impossible to keep straight all the poisonous and non-poisonous plants out there. Even the most well intentioned garden center clerk might get it wrong, putting your pup at risk. Check before you buy at ASPCA.org’s Poisonous Plants database. Be aware that even the most benign plants can cause problems if ingested in large quantities or if your pup has other health issues.
On the whole, plants in the mint genus (Mentha) seem to be fairly safe for dogs, including peppermint and spearmint, (but excluding Mentha pulegium.) In fact, many common herbs are safe for dogs and keep their highly evolved noses stimulated. Look for lavender, basil, rosemary, and oregano to include in your garden. Not only will these herbs freshen your pet’s breath should they choose to take a nibble, but they also attract pollinators and have lovely foliage.
Dog-Friendly Perennials
As native plants go, it gets a little more difficult to pin down exactly what is safe and what is not. Most native plants only have a toxicity rating for livestock, but with completely different digestive systems, does that rating apply to dogs as well? There are lots of online sources for toxic plant information, so all I can provide here is a short list of native and adaptable plants that DO NOT appear on those toxic plant lists and DO appear at our spring sale.
Be sure to check with your veterinarian before assuming the safety of any plant, especially if your pet is prone to grazing.
Happy Tails, Happy Trails
If your dog spends unsupervised time in the yard, you have surely found narrow, hard-packed trails devoid of vegetation. These are a dog’s version of cattle trails — a safe and quick way to get from A to B. Dogs are creatures of habit, and this one may stem from their wolf ancestors. Pro tip: DO NOT try to change the trail. It is extremely unlikely you will change his walking pattern; this deeply ingrained behavior is stronger than your desire for a perfect lawn. If you plant anything in this path your pup will tromp over it or dig it out of the way. Instead, think about hardscaping problem areas with pavers, gravel, or a charming boardwalk. A friend of mine has four huge Labradors (yes, you read that correctly) and still manages a stunningly beautiful landscape. How? By planting and planning in accordance with their flow of traffic.
How to Stop the Digging
A once beautiful garden can turn into an ankle-twisting nightmare once your pooch gets the urge to dig. Punishment often won’t deter this behavior, as it is almost impossible to catch them in the act. In some cases, this is just a phase of puppyhood and the dog will grow out of it. In others, it signals she is bored and frustrated – time for us humans to get serious about fetch, walks, and training to placate their need for interaction. Lastly, if you notice the holes seem to only show up in summer, it means Fido is just trying to find a spot to stay cool. Dogs will dig in cool, moist areas of soil to create a comfortable spot to lounge. An easy fix for this comes from landscape designer Maureen Gilmer,
“…provide them with a pit of their own where it’s more damp and cool than the flower beds. Give them sand to lie in and it won’t make mud or stains, and easily falls away from their fur. Keep the area moist and your dog will prefer that spot over all else .”
THE DOG-SCAPED YARD: Creating a Backyard Retreat for You and Your Dog
With some careful planning, your backyard can be an oasis for dogs and people alike. If you are needing a little help planning out your garden space, please call us to set up a landscape consultation. If you would like to get Fido out of the yard for a while, visit the Arboretum grounds for a long walk in the prairie. Be sure to have your pup on a leash and to clean up after her! Our grounds are open dawn to dusk, 365 days per year.
Prairie gardens have become increasingly popular over the past ten years as homeowners and businesses seek to directly reverse the trend of prairie degradation. Using prairie plants in the landscape is one way you can implement small-scale conservation and stewardship practices and become a part of a growing patchwork of prairie gardens in the Great Plains region.
These patchwork prairies will not replace what has already been lost, but can begin to help raise awareness about conserving any remaining prairie remnants. Hopefully, we will no longer take for granted the prairies around us and work toward managing and conserving this landscape that is quickly vanishing.
You may ask yourself, “Can a backyard prairie garden really make an impact? How do I increase the value of my prairie garden?” The value of a small prairie garden seems minuscule compared to the large prairie tracts that are being lost each year.
Here are a few things you can do to maximize the impact of your small patchwork prairie garden and further your backyard conservation efforts.
Plant a diverse prairie garden
As you design your garden, look to include as many different species as possible. It is important to have a succession of bloom from spring through fall. Include some of the native grasses to provide vertical elements and alternative textures. These elements will support and frame some of the native wildflowers. Your garden can become a conversation starter within your neighborhood. Your neighbors’ perspective may shift as your intentionally “wild” and slightly “messy” garden creates habitat for wildlife and pollinators. People will notice the difference. Your garden, along with many other prairie gardens throughout neighborhoods, will add value to the environment and broaden the conversations we can have.
Connect with where you live
For many of us, we take for granted the prairies around us. Even though we have some of the largest tracts of prairie like the Flint Hills at our doorsteps, we often don’t see the peril they face. So in light of these difficulties, it is imperative that we use native species from our region. Create a sense of place by incorporating as many plants of a local eco-type as possible. These plants are adapted to your climate and soil. Cultivated varieties and hybrids give us consistent characteristics and qualities. However, they often lack the same landscape value to pollinators as the true species and are most likely not from your region. Choose your plants wisely to maximize the impact they have to the garden aesthetic and the wildlife that need them.
Create an immersive experience
Layers of plants from different perspectives or vantage points will offer you the most enjoyment from your garden. As you are drawn through the landscape, surrounded by lush plantings, you can enjoy the changes from season to season. Sunlight, texture, color, and varying heights combine to provide unique encounters with your landscape. The value of these experiences for your body and soul cannot be measured. Quiet reflection can calm you after a hard day or bring you some perspective in your life.
Most gardens will never be as perfect as we want them to be, but they still have value for us and our environment. They are valuable to wildlife and pollinators. Valuable for the broader conversation about stewardship of the land. Valuable to us as we become more aware of the role we can play in conservation and as we develop a relationship with the land.
Don’t sell short the importance of the prairie, no matter how big or how small. Every step taken, every wildflower or grass propagated, every patchwork prairie garden planted has value.
In our Prairie Notes blog, we have talked extensively about the need to utilize native plants in the landscape. The benefits of having native plants are obvious and many. We have shown you pretty pictures with nicely spaced plants and beautiful combinations of wildflowers and grasses. Often, you get the sense that in order to have an attractive garden it has to be perfect.
Perfect gardens are maintained by perfect people or by horticulturists who do this sort of thing for a living. I don’t know of too many perfect people. In reality, perfection is in the eye of the beholder. Our gardens are a reflection of who we are and how much time we are able and willing to spend tending these landscapes. In fact, there is a growing trend (pun intended) that focuses less on maintenance and more on the natural order we see in nature.
Perfection can be a mess
The randomness of the prairie is easy to see and it flourishes effortlessly. Plants are intertwined and touching each other. There is not much space between plants. Instead, a matrix of lush, densely organized plants grow harmoniously together. To some, this looks messy and unkempt, but this natural collection of plants has a beauty and resiliency that is also healthy and productive.
Designing your imperfect garden
The thought of an imperfect garden is counter cultural. The idea that we would purposely design and then establish plants in our landscapes that mimic the prairie goes against just about every landscaping principle we have ever learned. However, more and more people are embracing the natural landscaping trend. We are creating a sense of place. These newly developed gardens incorporate a network of plants by grouping them together with similar growth requirements, and different textures and heights to completely cover the soil. All of these plants crowd out weeds and create layers that look natural in their setting. This idea takes the pressure out of growing the perfect garden and instead allows you to enjoy the process.
Maintenance of an imperfect garden
Imperfect gardens are not zero maintenance gardens. Some level of maintenance is still important, but being tied to your garden will be a thing of the past. Again, you may have to let some things go and work toward being comfortable having less control of the natural processes. A few dandelions and clover in the lawn can be overlooked. Letting some plants naturally seed and spread along with uneven rows and random plants that have moved from last year can now be tolerated. For us who want to control everything in the garden, we now have permission to back off a little and see what happens. We still need to pull some weeds, especially at first, but as time passes weeds will become less of a problem.
If you plant it, they will come.
An imperfect garden will attract visitors. Pollinators, birds, and other wildlife will be drawn to your intentional prairie garden. A functional garden will be used, and sometimes abused, by pollinators. Your landscape is providing just what wildlife needs. A few eaten leaves and damaged flowers is a small price to pay for helping complete the life cycle of a few thousand pollinators and other wildlife. Even some unwanted pests may visit from time to time. This is a perfect time to watch your imperfect garden take care of itself. Keep the chemicals in the shed and watch the natural predators find these pests and work to eliminate them. Should we really care if they are not all gone? You have my permission to step back and let the little critters work it out amongst themselves.
Your garden is a reflection of you. You are already having a bigger impact than you might imagine. Don’t be shamed into thinking that you have to have everything in its place. Sometimes the most aesthetically pleasing garden is sterile and void of plants that actually help the environment. By gardening, you are already an ecologist. You may not have the official title, but you are a good gardener.
RELAX, step back and enjoy the process. Don’t stress about the sad little plant in the corner of you garden. If it’s not happy, move it. Learn about what your plants need. Most of us don’t garden for a living, so give yourself a little grace. A perfect garden is one that gives you not stress, but joy.
Many people ask for prairie plants that bloom continually from spring through fall. There are no such plants growing in the prairie. Prairies rather have seasons; each time you look at them, something has changed. If you think about it, there are always plants coming into bloom and others going out of bloom throughout the year. “Petunias” don’t exist in the prairie, so to integrate wildflowers into the landscape, you must mix bloom times and plant heights.
This list, ordered according to bloom time, will be a starting point as you think about establishing a prairie garden with continuous bloom.
SPRING
Missouri Evening Primrose (Oenothera macrocarpa) is a popular landscape plant with large yellow flowers from May-June and maybe again later in September atop waxy green foliage. It stands 8-10 inches and likes a sunny location. Dwarf blue false indigo (Baptisia australis var. minor) can be found in pastures and prairie remnants throughout the state. It is usually less than 24 inches tall and its beautiful light blue to lavender flower spikes can be seen above the emerging prairie grasses in May and June. The foliage is unique with its waxy blue green leaves which eventually dries to an intriguing black color in fall. Dwarf blue false indigo thrives in full sun, tolerates clay heavy soil,and needs little supplemental watering throughout the summer months. Other spring wildflowers include purple poppy mallow, penstemon, amsonia, shooting star, yarrows and golden alexanders.
SUMMER
Coneflowers (Echinacea sp.) can be seen throughout the state during the early summer months. Purple coneflower (Echinacea purpurea) is a butterfly magnet. Whether it be the true species or one of the many new cultivars, purple coneflowers cannot be beat for their adaptability to sun or light shade, and the mid to late summer color they provide. Purple coneflowers prefer moist, but well drained soil. Pale coneflower (Echinacea pallida) can be seen throughout the Flint Hills and tallgrass prairies of eastern Kansas. Growing to three feet tall, pale coneflower is a drought tolerant and heat resistant addition to the garden. Make sure it gets full sun in a well-drained soil. The slender pale purple ray flowers (hence the name) in June and early July are sure to brighten up any perennial garden. Narrowleaf coneflower (Echinacea angustifolia) is shorter than pale coneflower. It averages 16 inches to 18 inches with short, wide, pink ray petals that bloom in late May and early June in south-central Kansas. Its range is the tallgrass and mixed-grass prairies of the central Great Plains.
Butterfly Milkweed (Asclepias tuberosa) is perhaps the most recognizable prairie plant. Its adaptability, vibrant colors and the lure of pollinating insects make it an excellent choice. Butterfly milkweed is a stout one to two foot tall perennial with a deep fibrous root system. Flowers range in color from the deepest reds in eastern Kansas to orange and even yellows further west in Kansas. It prefers full sun and good drainage and it will tolerate light shade. Once established, it is very drought tolerant. Several cultivated varieties have been developed including ‘Gay Butterflies’ and ‘Hello Yellow’.
Gayfeathers/BlazingStars (Liatris sp.) are true symbols of the prairie. There are seven species that are native to the state, all bloom during the late summer and early fall. Their upright spikes crowed with rose-purple flower heads add a vertical dimension to the last season landscape. Thickspike gayfeather, (Liatris pycnostachya) the past Kansas Native Plant Society wildflower of the year,found in the tallgrass prairie of eastern Kansas is the tallest ultimately reaching up to five feet. Rough gayfeather (L. aspera) is generally only about three feet tall and occurs in dry, rocky, tallgrass prairies and open woods in the eastern half of Kansas. Several other worth mentioning are L. muconata, L. ligulystylis, L. spicata, L. squarossa. Liatris spicata is the most common blazing star in the nursery trade but all would make a nice addition to any garden. Other summer bloomers are black-eyed susan, purple prairie clover, and other milkweeds.
FALL
Asters fill the gap between the relentless heat of summer and the frosty chills of autumn. They complete the cycle of bloom in the prairie. There are more than 30 different asters represented in the Great Plains. One of the showiest of the asters is New England aster (Aster novae-angliae). It reaches up to 6 feet in height and has pinkish purple or lavender ray flowers. It is found blooming in September and October in medium to moist tallgrass prairies. Other asters such as Aromatic asters ‘Raydon’s Favorite’ and ‘October Skies’ are wonderful late season bloomers. Another nice low growing aster is heath aster ‘Snow Flurry’. Include some goldenrod and Iron plants to add color options to the autumn garden.
WINTER
Little Bluestem (Schizachyrium scoparium) is one of the many prairie grasses that add winter interest to the landscape. Taller grasses like and big bluestem, swithgrass, indiangrass will provide texture and movement in the garden. These grasses are drought tolerant with deep roots systems that sustain them even through the harshest conditions. Look for switchgrass cultivars like ‘Cheyenne Sky’, ‘Northwind’ and ‘Totem Pole’
This is one of several design principles that are key to the success of any prairie garden. It is one of the easier design elements to incorporate. To learn more about using native plants in your landscape, join us for one or all of our native plant school classes in the new year.