Katie’s Plant Picks: Mint Family

Posted on April 13, 2016 by Katie Schmidt

Working in the Arboretum greenhouse is a terrible temptation. I love my perennial garden at home and I never stop adding new specimens, so our selection of natives and adaptables this year is a treasure trove for me. I must truly exercise some self control to prevent my entire paycheck from turning into wildflowers. Until I win the lottery or inherit a rich uncle’s fortune, I will have to just pick a few favorites!

If you, like me, have a fond eye for every flower, then it may be helpful to guide your shopping this year by selecting a plant family to collect. Researching a scientific plant family and finding those species native to your area can help lend a theme to your garden, add cohesiveness, and curtail your wild garden spirit.

This year I am going to plant from the mint family, Lamiaceae, or formerly, Labiatae. Lucky for me, our upcoming sale has lots of gorgeous options!

A red variety of bee balm shown with solidago (Left) and a light purple Monarda fistulosa (Right). Bee balm is part of the mint family.

Family Traits

Lamiaceae (lame-ee-ay-see-ee or lame-ee-ay-see-ii) is a large plant family with of over 3500 species. In science lingo, families are groupings of plant genera – a fancy way to say that these plants share common traits. A tell-tale sign of a mint family member is a strong aroma from the leaves, be it traditionally minty or not. These plants are some of the most valuable aromatic, culinary and medicinal crops in the world – rosemary, oregano, thyme, basil, salvia, hyssop, bee balm, and lavender are all a part of this big family.

Mint family plants commonly have square stems and flowers with bilateral symmetry (top and bottom do not match but sides mirror each other). The pictures in this post will hopefully help you to recognize some of the common traits shared among the mint family, and soon you will be identifying mint family species on your own!

Following are my top mint family picks from our plant sale, along with a list of varieties available.

Agastache ‘Raspberry Summer’ (left) Salvia azurea (right)

My Plant Picks

One of my top picks from the mint family is agastache, commonly known as hyssop or hummingbird mint. It thrives in sun and heat and its leaves emanate a wonderfully minty scent. Its tubular flowers attract hummingbirds to the garden. We are offering it in yellow, orange, blue, violet, and pink – perfect for whatever color combination you can dream up! Blooming from early summer to late fall, agastache is a showstopper year after year in the landscape.

A. foeniculum – Agastache ‘Kudos Yellow’ ‘Kudos Coral’ ‘Raspberry Summer’ ‘Summer Sunset’
‘Summer Love’ ‘Blue Boa’ ‘Violet Visions’

Salvia is another sun loving flower that I will be adding to my garden this year. Pictured above is a native variety, growing as tall as 5 feet in the right conditions. Salvias come in all shapes and sizes; mound forming, tall and showy, wispy, etc., and many different colors. Their long flowering spikes add nice movement in the breezy garden and are beloved by butterflies. The sale will have saturated deep blues and magenta available, as well as lighter tones, pink and lavender.

S. azurea ‘Grandiflora’ – S. pitcherii ‘Nekan’ – S. greggii ‘ Furman’s Red’ ‘Ultra Violet’ – S. nemerosa Violet Riot’ ‘Pink Dawn’ ‘Crystal Blue’ ‘Caradonna’ – S. macrophylla ‘Hot Lips’ ‘Windwalker Royal Red’

If you love the smell of Earl Grey tea then monarda is for you! Commonly called bee balm or wild bergamot (because of its similar fragrance to Citrus bergamia, source of earl grey tea), the leaves of this plant release their pleasant aroma every time you water or brush past. This year we are offering many different varieties of monarda, some native and others hybridized, in various shades of red and purple.

M. fistulosa – M. didyma ‘Pardon My Pink’ ‘Pardon My Purple’ ‘Pardon My Cerise’ ‘Leading Lady Plum’ ‘Grape Gumball’ ‘Lilac Lolipop ‘ ‘Cotton Candy’ ‘Cherry Pops’ ‘Rockin Raspberry’

It’s hard to only pick a few when we have so many ‘minty’ options! More than just the three discussed here, we also have catmint (Nepeta sp.), Russian sage (Perovskia atriplicifolia) and lavender (Lavendula ‘Phenomenol’), and many more. If you come to the sale, you know where to find me – hovering near the mint family plants, sniffing away!

Some information fact checked at http://delta-intkey.com/angio/www/labiatae.htm
Photos from Dyck Arboretum archives and Walter’s Gardens media resources.

Catkins: Spring’s Botanical Wonder

Posted on March 16, 2016 by Katie Schmidt

Sneezing, coughing, watery eyes – everyone is complaining about allergies this time of year, the Arboretum staff included. Many people point the blame at any pretty flower they see in early spring, such as Bradford Pear blossoms (Pyrus sp.), redbuds (Cercis sp.) or daffodils (Narcissus sp.). But it is likely to be less obvious blooms causing your sniffles – catkins. The trees are chalk full of these inconspicuous, pollen-spraying fiends! I’ll have to put aside my animosity for them and their disastrous effect on my sinuses while I explain their fascinating botany…but I’ll have to blow my nose first.

Catkins at the Arboretum now! From left to right, willow (Salix), alder (Alnus) and aspen (Populus)

Structure and Function

Catkins are flowers adapted to be pollinated by wind, which is known as anemochory. (Pollinated in water? Hydrocory. Pollinated by birds? Ornithochory. You get the idea.) Their dangling habit is part of this adaptation, and pollen is released from male flowers when wind causes them to shake. These worm-like blooms are actually hundreds of tiny flowers strung together. Each catkin is either male or female, but both sexes may or may not be carried on the same plant. If a single plant produces both male and female catkins it is considered ‘monoecious’. Some tree and shrub species have separate sexes and produce only male or female flowers on a single plant, meaning they are ‘dioecious’.

Salix caprea flower stages – male catkin (I) and female catkin (III), ovary cross section (V)

No Beauty Queen

In general, the prettier the flower the less likely it is to be pollinated by wind. The striking white pear trees blooming now are mostly pollinated by bees, and therefore not the cause of wind-born pollen allergies. If the flower is colorful and attractive it is probably luring in winged creatures to carry it’s pollen becuase the grains are too heavy to be carried on the wind. Catkins are not burdened with the task of being beautiful – they don’t have to attract a subjective eye for pollination. But in the plant world, if you can’t be pretty then you must be prolific! These little flowers release enormous amounts of pollen onto the breeze, with little chance that any of it will serendipitously land on the female of the corresponding species. Not only does the pollen grain have to float its way to the opposite sex, but it must then land exactly on the tiny stigma, the pollen receptacle atop the female flower, to produce pollination. What a feat! With such slim odds, it is no wonder that these trees produce prodigious amounts of pollen, much to the dismay of allergy sufferers.

Left , ragweed pollen (Amrbosia) Right, Hazel pollen (Corylus). Hazel trees produce catkins. Ragweed does not, but the pollen is so annoying I thought everyone should know what it looks like.

Left , ragweed pollen (Amrbosia) Right, Hazel pollen (Corylus). Hazel trees produce catkins. Ragweed does not have catkins, but the pollen is so annoying I thought everyone should know what it looks like.

Whether their pollen ends up in your nose and eyes, or the catkins themselves fall wet and soggy on your windshield, try not to loathe them too much – they are just another of nature’s incredibly well-designed survival mechanisms, and all your sneezing is just a sign that spring has arrived!

Attributions:
Wikimedia public domain images
Salix flowers – By Internet Archive Book Images [No restrictions], via Wikimedia Commons
https://archive.org/stream/textbookofstruct00thom/textbookofstruct00thom#page/376/mode/1up

Ambrosia pollen – By Nikita Karasik (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons

Corylus pollen – By Doc. RNDr. Josef Reischig, CSc. (Author’s archive) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Wonderful White Wildflowers

Posted on March 2, 2016 by Katie Schmidt

Our greenhouse is finally filling up, and what a sight! Little green sprouts are popping up in their pots, eager for more warm weather. By the time our plant sale rolls around the greenhouse will be a gallery of purple, pink and orange blooms! Unfortunately, all that gorgeous color will surely steal the spotlight away from some of my favorite white flowering species. Too many native and adaptable white wildflowers don’t get the attention they deserve in the modern garden. Opposite of the recent Oscar’s controversy, we aren’t giving these wonderful whites enough attention! White flowers add brightness to shady or green-dominated areas and won’t clash with your existing color palette.

Here are a few of my top picks from our upcoming plant sale that will add an under-celebrated species and a pop of brightness to your landscape:

Dictamnus albus – Gas Plant

Dictamnus albus, Gas Plant – https://commons.wikimedia.org/wiki/File%3ADictamnus_albus_280506.jpg

Dictamnus albus could be the conversation piece of your garden this year! Contrary to what its name suggests, it has a pleasant, citrus aroma when in bloom and the flowers are good for cutting. The “gas” in its common name refers to its flammable nature – the whole plant is covered with a thin layer of volatile oils that, in the right conditions, can be ignited for a brief flash of blue flame. A fun patio party trick, to be sure! These volatile oils can cause skin irritation (known as phytophotodermatitis, if you are looking to impress your friends or physician) akin to a chemical burn, a result of the oils reaction to sunlight on the skin surface. In my opinion, the beauty and intrigue are worth the small risk. Known for its longevity, it is perfect for a full sun or part shade area that is not likely to be disturbed, for the health of your epidermis and for the happiness of the plant.

Parthenium integrifolium – Wild Quinine

Parthenium intergrifolium, wild quinine – https://commons.wikimedia.org/wiki/File%3AParthenium-integrifolium-wild-quinine-0a.jpg

Tragically underused in today’s gardens, wild quinine blooms reliably all summer long and produces attractive seedheads for dried arrangements during fall and winter. Dreamy pearl-like flower clusters form atop serrated foliage. It thrives in full sun and isn’t preyed upon by bunnies and deer – the leaves are sandpapery and unpalatable. An attractant for equally undervalued pollinators, many species of beetles, wasps and flies flock to wild quinine to feed on its pollen and nectar. Tall and clump forming, it creates a dynamic backdrop for other, shorter flowers.

Ceoanthus americanus – New Jersey Tea

Ceanothus americanus, New Jersey Tea – https://commons.wikimedia.org/wiki/File%3ACeanothus_americanus.jpg (Public Domain)

A showy native shrub, New Jersey Tea grows to 3 – 4 feet tall and produces panicle shaped flower clusters in late spring to midsummer. The eastern namesake comes from its use as a surprisingly yummy tea substitute during the Revolutionary War and also utilized by Native Americans for various internal ailments*. The dense and vigorous growth habit make it difficult to transplant once established, so pick a permanent home for it in your garden. Ceaoanthus is quite tolerant of drought and poor soil, growing well in rocky, sloping areas. The Spring Azure and Summer Azure butterflies (Celastrina sp.) use New Jersey tea as their larval host plant and continue to feed on the nectar as adults. A great alternative to high maintenance, non-native shrubs.

I’ll be saving my pennies to snag a few of these beauties for my own garden, and hopefully some of you will as well. A complement to any landscape or flower arrangement and a haven for special pollinators, why shouldn’t we adore them?

Attributions:

Gas Plant: By Bernd Haynold (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

Wild Quinine: By Adamantios (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons

*info from Medicinal Wild Plants of the Prairie, Kelly Kindscher 1992

Spring Garden Clean Up: Dos and Don’ts

Posted on February 3, 2016 by Katie Schmidt

Though we surely still have a few cold days ahead, it is clear that spring is approaching. This warm spell is bringing the birds out singing and I spy little bits of green sprouting in our clumps of native grasses. This is a sign that it is time to think about spring clean up and preparing garden beds for new growth. Here are a few guidelines that I am following as I begin to tidy up the arboretum.

DON’T …

…start your garden clean up when the ground is too soft. If the soil is still overly moist from the winter wet, you will be creating compaction everywhere you and your wheelbarrow go. If it is truly muddy, the aftermath of your foot traffic could result in uneven ground, squished or exposed roots, and new puddling areas. I know we are all itching to get outside and play in the dirt, but if your garden spot is still soaked, wait.

When cleaning up large areas of native grass, I hop on the mower and let it fly! If you are mowing your grasses, be sure to set the blades up higher than usual so you don’t strip away new sprouts.

DO …

…cut back all those tall native grasses. It is nice to leave them standing through the winter to add color and interest to the winter landscape, but now is the time to shear them back, leaving only 4 to 6 inches left. Make sure to give grasses a haircut early in the spring so that the new growth doesn’t become entangled with the old, creating quite a hassle. And if you didn’t clear away all your annuals last fall, make haste! Soggy and molding annual debris is the wrong kind of compost and can lead to garden disease, providing nesting sites for microbial pests. Clear it out of there, pronto!

DON’T …

…go hacking away at your woody perennials like a maniac in an effort to neaten them up. Some species bloom on last years wood, others bloom on the current year’s wood. Before taking pruning action, do your research and ensure that you aren’t lopping off the buds of spring flowers.

You will lose out on all the wonderful blooms and aromas if you prune your lilacs in spring. Image from https://commons.wikimedia.org/wiki/File%3ASyringa_vulgaris1.jpg

You will lose out on all the wonderful blooms and aromas if you prune your lilacs in spring. https://commons.wikimedia.org/wiki/File%3ASyringa_vulgaris1.jpg

Lilac (Syringa), Forsythia, Mock-orange (Philadelphus) and Beautybush (Kolkwitzia) are all woody species that should NOT be pruned in the spring because they bloom on last year’s growth. Crypemyrtle (Lagerstromeia) and Butterfly bush (Buddleia) are just the opposite – spring is the perfect time to shape them and remove split or diseased branches. These species benefit from an intense spring pruning, because it jump starts the new growth that buds are formed on.

DO …

…compost as much of your debris as possible. Turn your pain into gain and make your own organic matter to put back in the garden. But be careful – tough-to-contend-with weedy species should not be incorporated into the pile as they will likely reseed themselves. If your compost is well balanced and hot enough at its decomposing center then weed seeds don’t stand a chance … but whose compost pile is that perfect? If I am worried about the seeds of a certain plant coming back to haunt me, I just don’t take the chance.

DON’T stay inside, DO enjoy the outdoors! January and February is the time to make your action plan for the gardening season and when those few warm days hit, get outside and make your plans happen!

Garden Resolutions: Going Green in the New Year

Posted on December 30, 2015 by Katie Schmidt

In honor of the new year, you may be promising yourself to eat better, exercise more or take that dream vacation you deserve. But what about your garden? Here are 5 garden resolutions to make your yard the best it can be this year – for you and the environment!

Skip the Tilling

For gardeners, starting up the rotor tiller is part of the spring routine.
But it might not be helping the soil as much as you think!

By Griffith and Turner Company.; Henry G. Gilbert Nursery and Seed Trade Catalog Collection. [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

Tilling is old news – skip the hassle this year!

Tilling thrashes through weeds for the short term, but turning the soil exposes dormant weed seeds to air and light, priming them to germinate.

Also, it can disturb earthworms and
soil bacteria that help to keep your soil aerated and healthy. Try planning out a garden that has specific foot traffic areas and beds that are easy to reach from all sides, minimizing soil compaction and the need for tilling. If you have the hardest-of-hard Kansas clay in your garden and simply must til, try working up only the rows/areas you are going to plant immediately, leaving the soil undisturbed elsewhere.

Save Water!

This year, make a resolution to lower your water bill and your environmental impact. The EPA estimates outdoor water use to be 30 percent of total household consumption. You can cut this figure by irrigating smarter and less often. If you have a sprinkler system, consider only watering in the morning hours to save water from the evaporative effects of afternoon wind and sun. You can conserve even more water by choosing a drought tolerant species of grass for your lawn – for example, a buffalo grass (Bouteloua sp.) lawn works well in Kansas and needs very little irrigation once established, even in the hottest summer months.

Collect Rainwater for Landscape Irrigation

Another way to lower your water consumption is to collect rainwater from your roof for outdoor use. Rain barrels or cisterns are simple to install and can collect run-off that would otherwise cause erosion and burden public drainage systems. There are many affordable, DIY rain collection systems that will lower your irrigation costs in the coming year. Make installation plans now so you can capture all the free water from those summer thunderstorms ahead.

Make Your Own Compost

Compost is good for the earth and fun to play in. Image from https://commons.wikimedia.org/wiki/Compost#/media/File:Compost.jpg

If you haven’t been composting, make it happen this year! Compost is a great addition to hard clay soils, keeps soil organisms thriving and can serve as an alternative to chemical plant foods. The best part? It’s free! Save yourself the time of hauling away yard clippings and leaves, throw them in your compost pile instead. If you want to compost on a smaller scale, then try a compost tumbler. Some great resources regarding composting information and tumblers can be found here. You can purchase one, or make your own!

Plant Native Species

Perhaps best way to be earth conscious in the new year is to plant your garden with native species. Ultimately, native species can give you all the benefits of the practices mentioned above: break up the soil with their deep root systems, conserve water with drought adaptations, and help balance the natural microbial activity of the soil. Of course, the Flora Kansas Spring Plant Sale April 21- 25 here at the Dyck Arboretum is the perfect place to find all the native species you need for your garden this year.

While you are making big plans for the coming year, plan to green up your garden with some of these tips. Make it a priority this year to save time, money, and the planet!

Pine Cone Botany For Beginners

Posted on December 2, 2015 by Katie Schmidt

The start of December means the start of “pre-Christmas”: the time of year when gifting stress sets in and your friends keep posting pinterest-worthy photos of their DIY holiday decorations. Who has time to hot-glue homemade ornaments and make garlands out of twine? It can induce a crippling case of craft-envy for people who have full time jobs and/or lack artistic prowess of their own.

For weeks I have been collecting pine cones from the Arboretum grounds, wishfully thinking I will find time to incorporate them into a hip holiday craft. The crafting is still on hold, but in the meantime I have become inspired by the cone itself! As the symbol of winter and the star of holiday decorating, we owe it to the humble pine cone to learn a bit about its fascinating botany before we dry it, paint it, wrap it in ribbon and hang it from the door knocker.

Pine Cones 101

Pine cones (and all true cones) are produced by a group of plants called gymnosperms. Pronounced just as it is spelled (gym-no-sperm) and originating from the Greek language, it translates to mean “naked seed”. The seed doesn’t get this label because of exhibitionist behavior, but because, unlike seeds of flowering plants, it develops outside of an ovary.

Public domain image from wikimedia commons - https://commons.wikimedia.org/wiki/File:Ovule-Gymno-Angio-en.svg

Don’t be intimidated by botany lingo, it’s actually pretty simple: embryo sac (nucellus) and dividing cell (megasporocyte or “mama cell”) make up the seed, which in non-flowering plants (gymnosperms) is unprotected by fleshy layers. Image from wikimedia commons

Since gymnosperms do not flower, they do not form a fruit as an ovary for their seed. Their cone is a rigid vessel for the developing seed which rests on the top of a scale. When the cone is mature and dries out the scales will open, dropping seeds.

Male pollen cones do not make great holiday decorations

Male pollen cones, bad for decorating.

Seed bearing cones are female, while pollen filled cones are male. Both sexes of cones grow on the same tree, but male cones grow on lower branches so that the wind can blow pollen up to the female cones. Likely all the cones you will collect for decorating are lady cones, since male cones are significantly smaller, softer and less conspicuous.

Pine Cone Diversity

Pines, cedars, and spruce trees are examples of common gymnosperms, but baldcypress, ginkgos and cycads are all unexpected members of this group as well. Cones from pine and spruce trees are my favorite to decorate with because of their classic Christmas charm and uniform scales, but you may want to hunt down some more exotic cones for yourself! The Arboretum grounds are home to many mature evergreens currently bearing cones, each with their own charisma.

From left to right: Norway Spruce, Pinion Pine, Austrian Pine, Austrian Pine (Opened), Ponderosa Pine, White Pine, Black Hills Spruce.

Lesser-known Cones

Alder flowers look like tiny cones.

I must note that some of my favorite cones are not true cones at all! The alder tree on the east border of the Arboretum makes adorable little cones as big as your thumb tip, yet this species is not a gymnosperm.

These cones are actually flowers that resemble their cone-bearing ancestors; flowering plants evolved from gymnosperms, yet alder trees have retained some characteristic reproductive structures.

If you can’t impress your friends with precision gluing and glitter technique this holiday season, impress them with your botanical knowledge! They may wish they had spent less time slathering peanut butter on pine cones and more time learning about them.

Not-So-Sweet Smells of Fall

Posted on November 4, 2015 by Katie Schmidt

Fall is a wonderful time to be the Arboretum grounds keeper – watering duties slow down, weeds are relenting, and I can wear my favorite sweaters to work. Brisk mornings and the coppery hue of the landscape make for a pleasant work week.

But wait … what’s that smell?

Working in many different areas of the Arboretum has led me to discover some autumnal aromas that are downright unpleasant. It isn’t the cinnamony smell of pumpkin spice latte on the wind, but a stench of skunk and old cheese! Early fall moisture and warm days bring out the worst of smells in some of our flowers and shrubs, causing me to cringe when working near the fetid few.

If you have visited us recently, perhaps you too are wondering about the foul air. Wonder no more! I introduce to you the top three smelly plants at the Arboretum:

1. Cypress (Cupressus arizonica)

While cypress trees traditionally have a pleasing aroma, this variety emits an odor redolent of skunk. The icy blue foliage may be off putting at first sniff, but if you rub the needles between your fingers the scent becomes influenced by citrus and spice, making it somewhat less offensive and almost forgivable. Almost.

(Left) Arizona Cypress tree in the Northwest corner of the Arboretum. (Right) Cypress foliage

Many evergreens have strong scents, and they get their classic “Christmas” smell from gummy resins, which contain high concentrations of terpene alcohols and acids. Unfortunately, this tree smells less like Christmas and more like roadkill.

Penstemon digitalis seed pods

2. Penstemon (Penstemon digitalis)

Penstemon is a showy spring bloomer that produces reddish, tear-drop shaped seed heads. But when you decide to cut those seed heads down for clean up or collection, I suggest pinching your nose! The bloom doesn’t have a strong scent, but the smell of the seeds and pods has been likened to animal vomit, or very acidic urine. The seeds themselves, though tiny, seem to make the biggest stink – after handling seed, it takes many rounds of hand washing to remove the tangy, kitty-litter smell from your fingers.

3. Rough-leaved dogwood (Cornus drummondii)

Dogwoods grow in dense thickets and are a popular choice for creating natural borders. Because of their thick cover, they are attractive to wildlife and nesting birds. But they are not attractive to the human nose. Dogwood leaves smell ever so slightly of curdled milk. In calm, humid weather, walking near our dogwood plantings can feel as if you have a dirty gym bag on your face. Luckily, as cooler weather sets in, the foul air around these plants seems to dissipate.

So, why the big stink? For flowering species, exuding sweet smells is a signal to bees and butterflies that nectar is ready. No two floral scents are alike in molecular makeup, allowing for specific pollinator attraction. Most plants that give off an unpleasant balm are attracting a less charismatic type of pollinator – flies and beetles. If not for pollination purposes, a malodorous plant may be using its sour perfume as protection from herbivores such as rabbits and deer.

Whatever the reason, I won’t hold the smell against them…but I may choose to avoid pruning them for as long as I can get away with it!