Totally Tubular

Tube flowers occupy a special niche in the ecosystem. They cater to pollinators with especially long tongues, saving their nectar for the lucky few who can reach it. There are lots of tubular blooms at the Arboretum right now, so I thought we ought to take a tube tour and examine a few of my favorites up close.

Penstemon

With so many species to choose from, there is a Penstemon that’s right for everyone’s garden. Penstemon grandiflorus is a drought-loving species, shorter and with waxier leaves than its common, white-bloomed cousin Penstemon digitalis. Penstemon cobaea is the diva of the bunch: much showier and larger flowered, with flouncy pink bloom spikes that are more prone to falling over after heavy winds or rain (the floral equivalent of fainting onto a nearby chaise). But for all its drama, it is worth it for those huge, almost foxglove-esque flowers! All of them are a boon to hummingbirds in early summer.

Penstemon grandiflorus, pink tube shapes flowers on a reddish stem, airy and delicate looking.
Penstemon grandiflorus can range from white to light pink or lilac. It likes dry conditions and lean soil.

Honeysuckle

There is good honeysuckle and bad honeysuckle, and you should learn the difference! Invasive honeysuckle can come in two forms: bush or vine. Amur honeysuckle (Lonicera mackii) is the bush that has taken over woodlands and displaced many of our native species. It spreads by birds ingesting the berries then *depositing* them into new areas. Forests full of this stuff have decreased value for wildlife, and become an impenetrable monoculture and a maintenance nightmare. A look-a-like species, Lonicera japonica, is a vine with a similar flower. This too is invasive in our area, and can be found climbing trees and toppling fences. If you have these species on your property, please eradicate them and replace with a native honeysuckle like Lonicera reticulata — all the beauty of clustered, yellow tube blooms, but without the nasty invasive qualities. Or Lonicera sempervirens, a red flowering vine that grows vigorously and attracts hummingbirds. Both are drought hardy too!

Amur honeysuckle (Lonicera mackii) is a threat to our native ecosystems.
Lonicera reticulata blooms in May, and attracts many pollinators!

Amsonia (Common name: Blue star)


These small, star shaped flowers all cluster together to create a showy head of light blue in spring. But behind each star is a tiny tube! I’ve seen hawk moths, also known as hummingbird moths, flitting around these things for weeks now enjoying their nectar. Amsonia is easy to grow and likes full to part sun. Amsonia hubrichtii is thin leafed, almost needle-like in appearance while Amsonia illustris has a broader, glossier leaf. Both are hardy and can stand up to wind and drought, with excellent fall color.

Amsonia hubrichtii in fall color. Photo courtesy Walters Gardens.

Monarda

Monarda fistulosa flower, photographed by Brad Guhr

Also known as bee balm, this plant has a unique, pom-pom style bloom made up of individual flower tubes. In Kansas you will most likely find Monarda fistulosa growing wild, in ditches or near streams and ponds. Monard bradburiana is a shorter, slightly better behaved cousin. Both like full sun and medium soil moisture. Monarda didyma is a common eastern US species, and does well here if given a bit of extra water. I’ve seen lots of bees, butterflies, moths, and hummingbirds on this one so it gets an A+ rating for pollinator attraction.

A red variety of Monarda didyma shown with solidago (left) and a light purple Monarda fistulosa (right)

Tube-shaped blooms can be found everywhere if you start looking. They have a completely different structure than the classic radial flowers (roses, petunias) or composite flowers we are used to seeing (think sunflowers, echinacea, asters). The diversity of pollinators is as great as the diversity of flowers they feed on thanks to coevolution for thousands of years! Consider adding some tubular flowers to your garden, and enjoy their wacky, wonderful shape.

Plant Apologies: Campsis radicans

I have accidentally been spreading some plant slander, and now it is time to apologize. Sometimes even we plant people get it very, very wrong! And so today’s post is all about Campsis radicans, aka the trumpet vine.

Illustration by Mary Vaux Walcott, CC0, via Wikimedia Commons

For years I have been railing against this plant.

“Ridiculously aggressive!”

“Impossible to get rid of!”

“It’s sold at these big box stores because they don’t care about the environment!”

While those things might be true in their own way, they leave out an important fact: It is NATIVE. Yes, Campsis radicans is a native vine that is found from Maine to Florida and west to Kansas. I have said many times that is was invasive, imported from far flung lands, and is a plague upon our forests. And boy was I misinformed. Remember, the word ‘invasive’ really should be reserved for non-native plants that have reproduced in and disturbed the local ecosystem. Aggressive is a better, more accurate way to describe a plant’s behavior if it spreads readily, but is native to our area. Invasive, as a horticultural term, means something about its origins and introduction into a new place.

Photo from Wikimedia Commons

Many Good Traits

This plant blooms July through August, attracting a whole host of long-tongued pollinators. Blooms can be red to orange, and its slightly sweet scent is great for trellises near the patio. It grows quickly, so can create fast shade over a pergola. The foliage is attractive and lush, and serves as a host plant for several species of moth.

The showy flowers attract bees and hummingbirds. Photo by Rob Hille, Public domain, via Wikimedia Commons

Some Not So Good Traits

My information about its origins was bad, but my warnings about its behavior were spot on. It is fast growing to a fault, and can be seen toppling fences and commandeering telephone poles. To keep this thing in control means relentless pruning. Growing right before your eyes, trumpet vine can easily climb 10 feet or more in a summer. It does not play well with others, and will send runner roots out into nearby garden areas. And don’t forget its seeds! A single pod can have 600+ seeds.

So, Campsis, I am sorry. You are a native vine with your own beautiful and ecosystem-sustaining qualities! Though I will still keep it out of my own garden, I can see it has a rightful place in a forest edge or hedgerow, and I will never call it invasive again!

Grasses for 2023

When a new plant is introduced into the market, it is more than just a fancy name. Plant breeders work for years, sometimes decades, to perfect and patent a distinct new plant variety. Sometimes this is the work of hybridization, complicated gene editing or human-aided crosspollination. But other times it starts by finding an interesting plant in the wild that varies from its normal phenotype and reproducing it reliably in trials to get ready for the mass market. Either way, after all that work, it is exciting to see the results!

Here are two new grass varieties available at our spring FloraKansas event, both the result of finding great natural specimens growing wild and capitalizing on their landscape-worthy traits.

Sorghastrum nutans ‘Golden Sunset’

Sorghastrum ‘Golden Sunset’, photo courtesy of Walter’s Gardens

I’ll admit that Indiangrass, also known as yellow prairie grass, is not my favorite of our native species. It is always flopping over and spreading everywhere. I don’t care for its sloppy habit. But ‘Golden Sunset’ might change my mind! Selected at the University of Minnesota and in development for 15 years, this grass is known for its upright habit and early flowering. That means more time to enjoy the bright yellow feather-like plumes, and they won’t fall over in the strong Kansas wind! Great for creating a screen or living fence, or as an accent in the back of the garden. Use Sorghastrum ‘Golden Sunset’ in place of non-native and invasive Pampas grass. Sorghastrum serves as a host plant for the pepper-and-salt skipper butterfly.

Grass height: 3 ft
Grass with blooms: 6 ft
Plumes can be up to 12 inches long!

Andropogon ‘Karls Cousin’

Tall and stately, this grass is will not sprawl and go limp like the parent species. Photo from our supplier, Hoffman Nursery

Big bluestem (Andropogon gerardii) is an important species in the tall grass prairie ecosystem. Beyond providing an incredible amount of biomass for grazers, birds and insects, they are also well loved in the urban and residential landscape. ‘Karl’s Cousin’ is a selection found by breeder Dave MacKenzie growing on the side of the road. It was distinct and eye-catching, and after taking may divisions and many years in the trial garden, ‘Karl’s Cousin’ was named as a new variety of Andropogon. It’s much more upright than the species, with good color and strong stems and can be used as a replacement in some situations for ‘Karl Foerster’ grass, a non-native cool season ornamental grass. Where the straight species big bluestem might be too large or floppy for a city garden, this variety makes it possible to include in even small spaces.

Grass height: 4 ft
Grass with bloom: 7 ft
Great fall color!

Grass for Every Place

We have been planting and selling native grasses here for many years. We definitely have our favorites, like ‘Northwind’ Panicum and ‘Twilight Zone’ Schizachyrium. But there are hundreds of great grass species out there to fit any landscape. Dry, rocky soil? Try a western Kansas species like Bouteloua gracillis. Need a tall and fast growing living fence? ‘Dallas Blues’ switchgrass might be right for you. And if you have too much shade for traditional prairie grasses, consider adding sedges to your garden. While not technically in the grass family, these plants add grassy texture but can handle conditions from dry shade to full sun bogs. Keep your eye on our FloraKansas page to get the Native Plant Guide as soon as we update it for 2023, so you will know what species we have available this year.

Landscaping at Wichita Art Museum – Photo by Brad Guhr

Winter Green

This time of year, I am especially thankful for my prairie garden. While the rest of the non-native and plants are looking limp and frozen, many of my prairie plants are standing tall and providing excellent color, texture and shape. Lots of native species even stay green through the coldest days of winter!

Stay Cool

For most garden plants, freezing temps are the abrupt end to the growing season. Their stems and leaves freeze, and with freezing comes the expansion of water in their cells, rupturing their delicate tissues and leaving them limp and mushy. But most popular annuals like peppers, tomatoes, petunias and marigolds, are all tropical plants not accustomed to the cold. Perennial native prairie species have a few *tricks up their leaves* when it comes to surviving the cold. To stay green and prevent cell destruction, some plants loose their leaves all together (deciduous trees and shrubs), but others change the chemical composition of their tissues in order to stay green. They load their leaves with sugar, creating a sort of anti-freeze. A leaf full of sugary solutes has a much lower freezing temp than one with regular water inside. Genius!

Care of Winter Plants

Plants that retain a bit of green all winter are a real benefit to anyone who loves to spend time in their garden regardless of the temp. But, if it’s green, its growing (albeit very slowly!). Which means those plants might need a drink of water during the long dry spells of our Kansas winter. Don’t forget to water your landscape in droughty winters, especially if they are newly planted. Check the soil with your finger by pushing it in to the second knuckle — if it’s dry, add some water. If its moist, leave it alone. Too much water in winter causes rot and death to most dryland loving natives. Manage your winter water carefully and you will be rewarded with vigorous green growth in spring!

This dried Vernonia fasciculata, with its seeds dispersed from the flowers already, has little star shaped sepals left behind that look great in dried arrangments.

If the grey, cold weather is getting you down, remember to get out in your prairie garden or visit the Arboretum to observe all the wonderful shapes, textures, and colors our native plants have to offer. Before you know it, spring will be here and we will be reminiscing about the slow, peaceful days of winter!

New Native Plants for Florakansas

“New native plants” is a misnomer we use a lot throughout our blogs and newsletters. In fact, they have been here for eons! But we get pretty excited around here when we can add a lesser-known native to our inventory for the first time. “New” just means newly available to our customers. Thanks to growing demand for natives in the landscape industry, more wholesale growers are expanding their offerings, which means we can expand our FloraKansas selection.

Solidago flexicaulis, zig zag goldenrod

A goldenrod that prefers shady, woodland conditions, Solidago flexicaulis can be found in far eastern Kansas and throughout the Ozarks, all the way to the east coast! This plant presents a great opportunity to get some color and pollinator attraction in shaded areas. Its name refers to the zig zag pattern of blooms up the stem. To identify it from other shady goldenrods like Solidago odora or Solidago caesia, look for the wide leaves with dramatically serrated edges. Companion plants include wild geraniums, columbine, and jack-in-the-pulpit.

Fritzflohrreynolds, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Douglas Goldman, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Clinopodium arkansanum, limestone calamint

Rob Routledge, Sault College, Bugwood.org (Cropped by uploader), CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

At less than a foot tall, we don’t want you to accidentally pass this one by! Limestone calamint is found growing in the open glades and rocky prairies of Missouri and Arkansas, along with a few populations scattered in New Mexico, Texas, and the upper Midwest states. Tube-shaped flowers typical of the mint family will attract plenty of pollinators. Plant in soil that is well-drained, rocky, and slightly alkaline, in full to partial sun. Plant with similar sized friends that like rocky soil too, such as blue grama grass and perky sue.

Rosa carolina, pasture rose

Photo by D. Gordon E. Robertson, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Most roses you see in the flower shop or floral department of the grocery store are not native roses. Not even close! Shipped from all over South America, they have made us forget the simple beauty of our own native rose species. Wild roses may not have the massive, overstuffed blooms and countless layers of petals, but these natives are much easier to care for, provide tons of nectar to insects, and smell heavenly. Pasture rose is 1 to 3 feet tall and likes open, sunny exposures. As a native species, it is more resistant to rose-rosette disease than ornamental types. Very thorny, these roses can be used to form low hedges or a living fence.

Viola pedatifida, prairie violet

Photo in public domain at Wikimedia Commons

These diminutive and inconspicuous native plants live their life in the prairie understory, shaded out by taller species all around them. Blooming in spring, they are great next to sidewalks and in areas you pass by frequently so you don’t miss them! Prairie violets very closely resemble the other species of violet we carry, Viola pedata (bird’s foot violet), but that one has orange stamens and prairie violet does not. Both are host to many butterfly species but they do not spread as aggressively as common violets. These look great with crocus, and spread nicely underneath grasses like little bluestem.

Spring will be here before you know it! Which native plants will you add to your garden in 2023? Check our FloraKansas page for updates about the spring event.

New Year, New Plants

Winter is a great time for gardeners to curl up on the sofa and pore over seed and plant catalogs. Every year I try to order a few new plants to spice up our inventory and widen our species diversity. Just looking at all those beautiful blooms to choose from gets me excited for spring! Luckily, when I am ordering plugs and bulbs to grow in the greenhouse, I get to spend hours doing just that. Here are some new adaptable plants we will be offering at our spring FloraKansas:

Gazania linearis

Gazania linearis flower, photo by S Molteno, CC BY-SA 4.0 via Wikimedia Commons

This tough South African native is hardy to zone 5 and loves dry conditions. An extremely long bloomer, showing off its sunny yellow flowers for much of the summer, it only reaches six inches tall. Strappy grass-like foliage can be thick and form a ground cover. This plant is right at home in rock gardens and tough spots that don’t get much irrigation. Pair with native flax (Linum perenne) and fame flower (Talinum calycinum).

Peony Itoh x Pink Double Dandy

Photo from GrowingColors.com

Itoh peonies, also known as intersectional peonies, are stronger and larger than regular garden peonies. A rare and hard-to-find hybrid between tree peonies and garden peonies, they are becoming more readily available these days. Known for fantastically huge blooms and an upright habit, never flopping over in the rain like other peonies do. This is a new introduction, with blooms boasting a bright pink center and paler pink edges. It makes a great centerpiece of any garden, or show-stopper when planted in groups along a driveway or border.

Heuchera ‘Peachberry Ice’

Coral bells is a favorite shade plant for many people. Colorful foliage, low maintenance, dainty blooms – it has a lot of appeal! Given a bit of moisture and some protection from sun during the hottest parts of the day, coral bells is long lived and easy to grow. This new selection from Proven Winners has a showy range of copper to blush leaves and a bushy habit. We are excited to try it out on our grounds if we can find the right spot.

Dianthus ‘Red Rouge’

Dianthus is a stunning late spring early summer bloomer, and good for pollinators too! Photo courtesy of Walters Gardens

Dianthus, also known as cheddar pinks, is a tough little plant that loves sun and hot weather. The single blooming variety (seen above) is also great for pollinators, and pairs well with Kansas native Hymenoxys scaposa and Sporobolus heterolepis, both short and sun loving as well. Dianthus tend to rot if the roots stay moist too long, so be sure the soil has good drainage. Plant along sidewalks and at the front of the garden border.

I never get tired of researching new plants and trying them out on our grounds and in the greenhouse. Look out for our next post all about the new Kansas natives we have added to our inventory for the upcoming spring sale. Hopefully dreaming of these beauties will help you get through the long winter still ahead. And when the ground thaws, we can all get our shovels dirty once again!

Songs of the Solstice

When the weather is cold and the days are short, I just want to curl up on the couch and rest. And according to prairie plants, that’s exactly what I should be doing! As much as it pains us to see our favorite plants dry up and freeze in the fall, cold weather is an essential pause in the growth cycle for some plant species. Dormancy, vernalization, and cycles of freezing and thawing are an important part of their development.

A winter sunset dips below the horizon behind a bur oak tree and a snowy landscape.
Photo by Gerry Epp

Baby It’s Cold Outside

Contrary to how we feel about it, cold weather is a very good thing for plants in our region. In fact, there are many species of plants that cannot bloom without a prolonged cold period. Apple trees cannot form proper buds without 500 to 1,000 “chilling hours”. Tulips will not bloom without 12 to 16 weeks of cold soil temperatures. And even the historically finicky peach tree will not set fruit without a proper cold spell during the winter months. This cold period for plants is called ‘vernalization’. It all has to do with needing some rest — after a strenuous growing season, many plants use the signal of dark days and cold temperatures to go into their dormant phase, an energy-saving adaptation that allows them to jump back into full blossom in the spring. Why fight the harsh winter conditions when you can just sleep through it?

On Dormancy, or Rest Ye Merry Gentle(Plants)

Dormancy is not death, it is more like a long, deep sleep. In preparation for winter, plants stop actively growing and begin to transport their sugar reserves into their roots. This means the foliage may look shriveled and dried, but the roots are more alive than ever, packed with energy to get through the winter. When they go dormant, all the internal chemical processes of the plant slow down. Isn’t that good advice for us too? Slow down, give up trying to keep up all those lush, green appearances and just focus on your roots and energy reserves! Remember to give your plants a bit of water of the winter if things get abnormally dry; they are resting, but still need moisture to stay alive until spring!

The dormant trees of the Arboretum take the spotlight during our Prairie Lights event. The lights accentuate their form and help us to appreciate them even in the off season. Photo by Amy Sharp Photography.

Let It Snow

Native prairie seeds are especially in need of cold, moist winters. These seeds have incredibly hard seed coats, called testas. The outer shell of the seed is hard for many reasons: to protect it from the elements, to prevent it from germinating too soon when conditions are unfavorable, or to survive the inside of a stomach once it is eaten and, – *ahem* – expelled. But this hard seed coat does finally break open after many freezes and thaws in a Kansas winter. Moisture works its way into the seed and helps the process along. Without deep cold, seeds would not germinate as well or at the correct time.

Seeds take many shapes and forms. Line drawing by Lorna Harder, can be found on our “Prairie Restoration” informational sign on the Arb grounds.

Winter can be a beautiful season if you know where to look. Prairie plants provide interesting textures and colors even through the darkest days of December and January. And more than being aesthetically pleasing, leaving gardens standing through winter provides the necessary habitat and shelter for wildlife to survive cold temperatures. As you enjoy your own kind of dormancy this winter solstice, I hope you find some comfort in the natural cycles of waking and rest happening all around you!

Leave The Leaves

Leaves are everywhere this time of year, and for good reason! Leaves have an important role in the ecosystem. Trees and the organisms living in and below them have evolved for millions of years together, working in sync to create vegetation and break it down in an efficient cycle. But most Americans don’t realize this, quickly raking the leaves away as soon as they fall on our precious lawns. Well, here are some facts that might change your mind and urge you to leave that rake in the garage!

The leaves of ‘October Glory’ maple are beautiful but my do they fall everywhere!

For the Love of Lawn

Most people rake leaves out of concern for their lawns. Rightly so, as a thick layer can damage turf grass. Leaves staying wet too long causes snow mold, and without enough airflow even grass smothering, leaving bald patches next spring. But a light layer of leaves shouldn’t be cause for alarm – remember, a few leaves here and there will feed the lawn the nutrients it needs. You may consider using a leaf blower to thin them out if they are piled too high in some areas, allowing the turf to breathe through the winter. And when you think about it, if your non-native turf grass is so fragile and takes so much special care to grow well outside it’s natural environment…*maybe the problem is the grass, not the leaves?

*Our obsession with a 1950’s American Dream Lawn (which actually harkens back to medieval castle-dwelling elitism) is a problem; its a multi-billion dollar industry that relies heavily on chemical inputs, replaces native habitat, and sucks up millions of gallons of drinkable freshwater, but produces no useful food crop. Ready to ditch that old fashioned thinking and consider downsizing your traditional lawn space? More info here, here and here on alternatives.

Oh Leaf Me a Home

Leaves are home to lots of overwintering insects. We may not notice them, but these tiny friends are there, clinging to the underside of leaves and crawling into the leaf piles that collect in garden beds. While the well known and well loved Monarch butterfly migrates, most of our native insects do not! They desperately need these natural places to hid in winter, often as an egg, chrysalis, or hibernating as an adult. Many gardeners work hard to support declining insect populations all summer, only to ruin all their hard work in the fall when they take all their leaves to the curb.

Many butterflies and moths depend on leaf litter for shelter.

Paper or Plastic

Too many folks spend their beautiful fall days bagging up leaves and sending them away. This creates a lot of plastic waste. Not only are we sending enormous amounts of plastic to the landfill, all the insects, eggs, and larvae already on those leaves will die inside the bag, never to take their place in the ecosystem! The nutrients in that foliage will not return to the soil, and instead stay trapped for hundreds of years in their plastic prison.

Free those leaves, folks! Let them decay and feed the soil microbiome. If you must haul them away, load them onto a tarp for transport, or opt for paper bags that can be composted with the leaves.

Our student employee Rachel shows the size of a typical paper yard waste bag.

I love a lush, green lawn as much as the next person, but we can all aim to achieve a useable lawn space while also being kind to the environment. If you have too many leaves in one area, spread them out, move them to your garden as free mulch, or start a neighborhood leaf compost pile. If you must haul them away, stick to compostable or reusable containers and consider taking them to a city compost area or even your local Arboretum! Doing your part to help the environment, in this case, means less work for once. So stay inside and watch that football game, the leaves in the yard can wait.

Prairie Pond Clean Up

Volunteers are truly the heart and soul of Dyck Arboretum. Without them, we just wouldn’t be able to do what we do! That fact was never more apparent than on our prairie pond clean up day October 19, when seven intrepid volunteers fired up their chainsaws to help staff tame the mass of trees that had sprouted up around the pond. It took years for them to grow, but only a day to clear them all out.

Brad Guhr chopping freshly felled trees into logs for firewood

History of The Prairie Pond

Most people are familiar with our main pond in the center of the Arboretum. It is our most frequently visited spot and draws many people to its island to feed turtles. But our lesser known prairie pond has its own special magic. Located west of the greenhouse and north of the Prairie Window Project, this is a rain collection point where the runoff from the prairie collects. Seasonally, this pond fills quickly with spring rains and then often dries up in late summer. In February and March it is absolutely humming with frogs. They are so loud it can give me a headache working out there! Click here to for a video of their spring songs.

Why Cut Down Such Nice Trees?

It can feel a little sad to cut down trees, especially young ones with so much potential. But prairies are increasingly vulnerable to being snuffed out by tree cover. The shade of tall trees decreases the species diversity of a prairie. This is especially true when trees like willows, cottonwoods, and invasive pears and elms all sprout up tightly together. Cedars are especially problematic, with their wide, low branches and acidic needles making it difficult for anything to grow beneath it. We could see bare spots in the grass cover where we cut down these trees, and I am eager to watch native prairie species return. If we can burn this area more frequently, we should be able to prevent further woody species from taking over.

Many Hands Make Light Work

What would have taken me at least a week, volunteers accomplished in a day. With three chainsaws running, helpers to stack wood and load trucks, and other folks painting the stumps with RTU so they don’t regrow, it was an efficient team. Twelve pick up loads (!!!) of brush was hauled away, and many nice logs where cut to be used in future years in our Prairie Lights fire pits.

We are so grateful to volunteers who brought a pick up load full of tools to help us accomplish our mission!

We appreciate all the community members who make our mission possible, from the folks who greet visitors at the front desk or those that like to stay behind the scenes pulling weeds in the gardens. A public garden is a community resource, and should be treated as such.

Volunteerism keeps your favorite local gardens accessible and maintained! If you want to volunteer, be it once a week, once a month, or once a year, call or email us to get the conversation started, or visit our volunteer page to apply.

Searching for Bigfruit Primrose

I was recently invited to Liberal, Kansas to give a talk to a garden group. While I enjoyed meeting and chatting with the knowledgeable and enthusiastic gardeners of the area, the best part of the trip was the detour we took to Clark State Fishing Lake. I knew a special subspecies of primrose grows there, and I was eager to collect a bit of seed. My partner and I spent an hour or so, on a balmy 100 degree day, seed collecting.

Broomweed (Gutierrezia dracunculoides) in the foreground, Clark County Fishing Lake seen in the distance.

A Unique Oppourtunity

Because I am rarely in the southwest corner of the state, and at this time of year the seed would be plenty dry and ready to collect, this was a serendipitous moment. I went in search of Oenothera macrocarpa subspecies incana. This regionally-specific primrose grows only in southwest Kansas and parts of the Texas and Oklahoma panhandles. While Oenothera macrocarpa is already a drought tolerant wonder plant, withstanding intense heat and dry weather like a champ, this subspecies may be even more adapted to drought based on its native range. Collecting and propagating seed from subspecies and species with historically small ranges allows us to offer more regionally specific plants to our western Kansas customers, and also brings greater genetic diversity to the Arboretum grounds.

According to USDA Plants Database, Oenothera macrocarpa ssp. incana has a limited range, and grows on some very hot, unforgiving terrain.

Late Summer Treasures

I was checking these Amorpha nana (dwarf false indigo) seeds for viability, before shoving them in my pocket, likely never to be found again.

While scouring the hillsides for primrose, we found lots of other familiar faces. There were seas of buffalo grass and blue grama to admire, growing happily even in a long standing drought. I even saw three different Amorpha species! Amorpha nana and Amorpha canescens were growing up in the dry hill sides, and Amorpha fruticosa was growing along the edge of the lake. I also encountered a completely new species for me, Stenosiphon linifolius. This member of the primrose family is called false gaura, and while it looks nothing like the primrose I was actually searching for, it gave me hope we were in the right place!

Fruits of Our Labor

I collected seed from a few species, but I do so carefully; never taking the entire supply of that location and trying not to disturb the plants too much. Seed collection must always be done with the health of future generations of plants in mind! I took two seed pods of Mentzelia nuda, one small pod of Asclepias hirtella, and a few tufts of Heterotheca canescens. All of these species would be new to our FloraKansas Native Plant Days, if I can successfully grow them.

The lake is surrounded by hills, which makes for scenic views. The water was very low, but there were still many birds about, and lots of turkey vultures circling above.
Bigfruit primrose (Oenothera macrocarpa) has large seed pods shaped like starfruit except with only 4 points. These are the type of pods we were searching for.

We walked the hills for an hour or so, driving to several locations around the lake to try our luck. It has been a very dry summer, so perhaps the plants had dried up? We saw lots of grassy debris built up, maybe it was hiding just under the next tuft?

It was terrifically, fantastically, abominably hot that day. Eventually the sun won out against our will to find the primrose and we left without finding it. I hope to visit again in spring, when they might be blooming. Then I could pin their location on my phone’s GPS so I might find their seeds easier in the fall.

Two people who should have worn more sunscreen and drank more water, but had a blast on the shortgrass prairie!

Shortgrass Prairie, Big Blue Sky

If you have the time, make a day trip to western Kansas and take in all that the shortgrass prairie has to offer. It is often overlooked as less scenic or showy than the tallgrass prairie, but I disagree. Its diminutive species and rocky outcroppings have a rugged charm that reminds me of old western movies. And the endless sunny skies remind me of the resilience that these plants must have to survive. If any of you readers do visit Clark County Lake, keep an eye out for the seeds of this much-sought after primrose! I would happily seed swap for it.