The Lady Slipper Archives - Page 18 of 40 - Kentucky Native Plant Society

Benefits of native grasses in urban landscaping

By Susan Harkins and Jonathan Kubesch

Prairie dropseed ((*Sporobolus heterolepis*). Photo: Lady Bird Johnson Wildflower Center

Years ago, when I started planting native species for wildlife, I planted trees and flowers. My commitment to natives is strong, and I’ve restored nearly half of my property with native species of trees, shrubs, and flowering plants. Only one thing is missing, and that’s native grasses. Native grasslands and savannah are part of Kentucky’s rich natural heritage.

Native grasses provide a showy, functional addition to the backyard, the field corner, or the fencerow. At the time, I didn’t know the many benefits for our native wildlife that native grasses offer.

Improve ecosystem function

At the heart of every successful garden is the right soil. Regardless of your soil type, keeping topsoil and runoff in your urban yard can be a challenge. Traditional lawns can prevent erosion and runoff under ideal conditions, but native landscaping protects soil and water from more extreme weather events with fewer inputs. Some people plant rain gardens to prevent run-off but native grasses are also good at holding soil in place thanks to their long, fibrous, strong roots. Grasses help build organic matter and increase water infiltration. It doesn’t hurt that they require little maintenance and that they’re beautiful.

Native grasses also have reduced soil fertility requirements in comparison to many introduced species. Work from Kentucky and Tennessee suggests that most soils can support these grasses with modest additions of P and K (Potassium and Phosphorus) both of which can come from compost or the regular breakdown of organic matter in the yard. Native grasses can make a yard more of a closed loop for cycling nutrients.

Improve habitat

Until I started following the Kentucky Department of Fish & Wildlife Resources program on how native grasses benefit songbirds, I had no idea how important native grasses are to wildlife. I was aware of how game birds, such as quail, benefit from native grasses, but almost everything benefits from native grasses. Songbirds benefit from the insects, grass seed, and habitat available in native grasses. The open space at the ground level allows baby birds to move freely and the cover of native grasses provides protection from predators.

Eastern bottlebrush (*Elymus hystrix* L.). Photo Lady Bird Johnson Wildflower Center

Native grasses are host to a number of butterfly and moth species in their larval stage. Rebuilding these populations will help rebuild the bird populations as many feed caterpillars to the young. While not every yard might produce a full ecosystem, there’s research underway at Virginia Tech about how to use native grasses and wildflowers to produce bee-friendly beef.

Establishing native grasses

Converting current lawns or garden space to native grasses requires some planning and preparation. The easiest areas to convert towards native grasses are formerly wooded areas or cropland. In subdivisions, this might be a new home. Old pastures and lawns can be difficult to convert to native grasses because of the existing weed issues present. That said, attention to detail can make areas work for native grasses.

Start with a soil test from the University of Kentucky to get a baseline for any fertility adjustments. Killing existing vegetation needs to be as effective as possible. Research across the mid-South currently leans towards a “spray-smother-spray” approach where the current vegetation is killed, a competitive smother crop is grown to outcompete any surviving weeds, and then that crop is killed prior to planting native grasses. In your urban yard, an organic alternative might be to use solarization, tillage, or intensive mowing to kill existing vegetation.

Depending on the area to cover, one might consider buying seed or plugs. For plugs, assume that a native grass plant can be anywhere from one to three feet in diameter, so be sure to plan accordingly. Seeding can be a challenge given the seed is fluffy; try mixing the seed with play sand, cracked corn, or pelletized lime to make it easier to broadcast. Native grass seeding rates can vary, but plan to eventually get at least 1 seedling per square foot of allotted space.

Limiting weed competition is crucial in the establishment period, as has been seen in recent work from Virginia Tech. Introduced annual grasses, such as foxtails and crabgrass, can be hard to control in native stands. If using plugs, consider mulching around plants with straw.

When considering where to add native grasses to your landscaping, keep in mind that they’re difficult to move once established. The only non-chemical way to remove them is to mow them to the ground several times over the next few growing seasons.

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Poetry Corner

By Liz Neihoff

We only live
in a lighter sea
and so hear and
see, in Summer’s
cottonwood crowns,
South Sea breakers
where big salt lands.

Wax is buffed
to green crystal shine.
As thousands of gimbeling
leaves dance and flash
at Summer’s height.
A welcome sound
of moist air comes
over the ridges,
all free as a breeze.

Monarch Butterflies and Milkweeds: Planting Kentucky Native Milkweed Species

By Kendall McDonald (EEC)

June 20^th-26^th is National Pollinator Week, an annual internationally celebrated event to educate, support and celebrate all things pollinator conservation. As plant enthusiasts, we have an appreciation and respect for pollinators’ complex and fascinating relationship to plant reproduction. The most well-known pollinator is probably the Monarch Butterfly, which has been reared by school children for decades in lessons about the butterfly life cycle. The monarch has captured the wonder of the public with its spectacular migration, with millions of monarchs traveling up to 3,000 miles to central Mexico and the California coast to overwinter annually.

**^{Monarch Butterfly: Spring & Fall Migrations in North America, map by U.S. Fish and Wildlife Service}**

Unfortunately, since the mid-1990s, the eastern monarch population (accounting for 99% of all North American monarchs) has declined by approximately 85%. There are six major threats to monarchs that have caused this major decline: loss of breeding habitat, climate change, loss of overwintering habitat, natural enemies, pesticides, and general anthropogenic factors. In response to the population loss, monarchs are currently on the candidate waiting list for Endangered Species Act protection. The U.S. Fish and Wildlife Service has a 2024 deadline to propose them for protection as threatened.

Mexico’s Commission of Natural Resources and WWF Mexico conduct annual counts of monarchs in the overwintering locations, oyamel fir forests of high-elevation mountaintops in central Mexico. To truly count millions of monarchs would be a monumental task, therefore the population is reported as an estimation of area of monarch populated overwintering habitat. The most recent count was reported as 7 acres (2.84 hectare) of occupied overwinter habitat, which is well below the 14.8 acres (6 hectare) threshold scientists say is needed to keep the monarch out of the risk of extinction in North America.

2022 Eastern Migratory Monarch Winter Population. Credit: Center for Biological Diversity.

In the United States, monarchs have lost up to 165 million acres of breeding habitat due to herbicide use and anthropogenic development. Monarchs rely on milkweed species (Asclepias sp.) as a host for laying eggs and as food when they are caterpillars. Historically, milkweed species were much more widespread and abundant. Between 1999 and 2012, milkweed numbers across the midwest declined by an estimated 64% due to threats such as habitat loss, anthropogenic development, and herbicide use.

One of the easiest things to do to help monarch populations is to provide breeding habitat by planting native milkweeds. Kentucky has 13 native milkweeds, and several species are available at native plant nurseries across the state.

List of Kentucky Resources for Purchasing Milkweed

KNPS list of Kentucky Native Plant Suppliers & Service Providers https://www.knps.org/native-plant-suppliers-service-providers/
Contact your local Wild Ones chapter: https://wildones.org/chapters/
Monarch Watch’s Bring Back the Monarch Program: https://monarchwatch.org/bring-back-the-monarchs/milkweed/

Kentucky’s Native Milkweeds

Asclepias amplexicaulis, Clasping Milkweed

Clasping Milkweed is found in sandhills, barrens, woodlands, and dry, sandy or gravelly soils. Its common name refers to the way the opposite leaf bases wrap around or “clasp” the stem. The Clasping Milkweed is an upright milkweed with an unbranched stem, with a single rounded cluster of pink purple flowers at the top. The flowers have a sweet fragrance similar to that of roses and cloves. This species is uncommon throughout Kentucky.

Asclepias exaltata, Poke Milkweed

The Poke Milkweed can be found in moist forests, slopes and forest margins. It has petioled, non-linear, opposite leaves that occur along erect to ascending stems. The flower umbels are relatively open and droop from long pedicels. Flowers of the Poke Milkweed are bi-colored, displaying a lovely composition of green to pale purple petals and white to light pink hoods and column. This species is uncommon in Kentucky, occurring in the Appalachian Plateau and Interior Low Plateau.

To learn about planting Poke Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-exaltata/

Asclepias hirtella, Prairie Milkweed (State Threatened)

The Prairie Milkweed is a State Threatened milkweed species that occurs in limestone glades and prairies. It has erect to ascending stems that can range from glabrous to densely pubescent, with widely spreading to ascending alternate, linear leaves. Flowers develop from the axils of the middle to upper leaves, occurring in dense globoid umbels of white to green flowers.

Asclepias incarnata var. incarnata, Swamp Milkweed

Swamp Milkweed occurs commonly across Kentucky in swamps, marshes, and other wet areas, especially over limestones and calcareous shale. The stems are erect to ascending, with course, petiolate leafs in an opposite arrangement. The flowers occur in flat umbels atop the stem, with vibrant pink flowers that have a fragrance similar to cinnamon.

To learn about planting Swamp Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-incarnata/

Asclepias perennis, Aquatic Milkweed

Aquatic Milkweed occurs commonly in the Coastal Plain of Kentucky, occurring in cypress-gum swamps, bottomland hardwood forests, and marshes. The stems are erect, with short petioled leaves in an opposite arrangement. Flowers occur in flat umbels atop the stem or in the axils, with white to pale pink coloration.

To learn about planting Aquatic Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-perennis/

Asclepias purpurascens, Purple Milkweed (State Special Concern)

Purple Milkweed is a State Special Concern milkweed that occurs throughout Kentucky in openings in moist bottomlands and swamp forests, prairies and woodlands. The steams are erect, with large opposite leaves up to 6 inches long. Deep purple flowers occur in relatively dense rounded umbels, with up to 6 umbels occurring terminally on the stem.

Asclepias quadrifolia, Four-leaf Milkweed

Four-leaf Milkweed occurs commonly in the Interior Low Plateau and Appalachian Plateau of Kentucky in moist forest and forest margins. This species has erect stems with both mid-stem whorled leaves and opposite leaves. The small pink and white flowers occur in umbels atop the stem, with relatively few flowers per umbel.

Asclepias syriaca, Common Milkweed

Common Milkweed, as its name implies, is common throughout Kentucky in pastures, roadsides and disturbed areas. This tall milkweed has stout erect stems, with large sessile leaves in an opposite arrangement. The flowers occur in large dense umbels of pink to purple flowers, with an attractive fragrance.

To learn about planting Common Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-syriaca/

Asclepias tuberosa var. tuberosa, Butterflyweed

Butterflyweed is a species of milkweed that occurs across Kentucky in woodland margins, roadsides and pastures. This species can be easily identified by its vibrant orange flowers, which occur in terminal clusters. The stems are erect to ascending, with sessile to short petiolate leaves in an opposite arrangement. Unlike other milkweeds, Butterflyweed does not have milky sap.

To learn about planting Buterflyweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-tuberosa/

Asclepias variegata, Redring Milkweed

Redring Milkweed is an uncommon species that occurs across Kentucky in upland forests and woodlands. This species has a single narrow stem, with petiolate leaves in an opposite arrangement. The flowers occur in spherical umbels, with white flowers with a red ring around the middle, giving it it’s common name.

To learn about planting Redring Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-variegata/

Asclepias verticillata, Whorled Milkweed

The Whorled Milkweed is an uncommon milkweed that occurs across Kentucky in barrens, thin soils of rock outcrops, open woodlands, pine flatwoods, and road and powerline right-of-ways. This species has erect stems with sessile, linear leafs in a whorled arrangement. The fragrant greenish white flowers occur in umbellate cymes in the upper leaf axils and stem ends.

To learn about planting Whorled Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-verticillata/

Asclepias viridiflora, Green Milkweed

The Green Milkweed is an uncommon milkweed that occurs across Kentucky in open woodlands, woodland edges, barrens, glades, and disturbed areas. This species has an erect stem with elliptical leaves in an opposite arrangement. Pale green flower clusters occur in the upper leaf axils of the plant.

Asclepias viridis, Spider Milkweed

Spider Milkweed occurs across Kentucky and occurs in prairies, dry woodlands, calcareous hammocks, and pine rocklands. The stems are ascending, with course textured leaves with short petioles in alternate to sub-opposite arrangement. The large flowers are green, purple and white, without horns, occurring in a solitary umbel atop the stem.

To learn about planting Spider Milkweed, visit: https://monarchwatch.org/bring-back-the-monarchs/milkweed/milkweed-profiles/asclepias-viridis/

Click to access Area-of-Forest-Occupied-by-Monarch-Butterfly-Survey-2021-2022-24may22.pdf

Southeast Medicinal Plants

By Coreypine Shane

Reviewed by Susan Harkins

Southeast Medicinal Plants is a guide for foraging wild medicinal plants in the United States southeast. I was hoping for an ethical review of the subject, and I wasn’t disappointed. My first stop was ginseng and here’s the first sentence: “This book is sharing how to identify ginseng (aka American ginseng) so you can observe it, not to harvest it.”

American ginseng is unethically and illegally wild-harvested throughout the Appalachians, which is quickly decimating wild populations. I appreciate the author’s honesty and his encouragement to grow your own or purchase only from reputable sources who don’t harvest from the wild.

The book’s first section is a guide on how to identify, harvest and use medicinal plants. The greater part of the book is an alphabetical guide to medicinal plants. Each plant includes a clear picture, information on how to identify the plant in the wild, where and how to wildcraft the plant and finally, how to prepare it for medicinal use. Harvesting information specifies methods for doing the least damage to the plant.

My favorite part of each section is “Future harvests.” The author identifies plants that have unusual growing habits or is of ecological concern, so you know whether harvesting what you’ve found is safe and ethical.

Given the nature of this book, it includes some non-native and often invasive plants. That isn’t a criticism; I’m all for harvesting invasives. I hope in a future edition, the author decides to use the term “invasive” and encourage foragers not to grow them on their property.

Coreypine Shane is founder of the Blue Ridge School of Herbal Medicine in Asheville, North Carolina. He has advised clients, taught classes, and presenter lectures for more than 25 years. He hosts a web sit at blueridgeschool.org.

Field Trip to Buena Vista Glades – July 9, 2022

Date of trip: 7/9/2022
Start time: 10AM
Location: Buena Vista Glade, Taylor, Indiana
Difficulty of hike: Moderate to Difficult. The glade is very rugged. We’ll hike about a mile and it will take probably two hours knowing plant nerds. And there are always ticks.

**^{Whorled milkweed (Asclepias verticillata)}**

Join Kentucky Native Plant Society member Alan Abbott on a field trip to Buena Vista Glade in Taylor, Indiana, about 50 minutes west from downtown Louisville. Plants that will likely be in flower include green milkweed (Asclepias verdiflora), whorled milkweed (Asclepias verticillata), and glade St. John’s-wort (Hypernicum dolabriforme). With a little luck we might also see Ozark bunchflower (Melanthium woodii) in bloom.

**^{Ozark bunchflower (Melanthium woodii)}**

One of the defining characteristics of the Bluegrass and Pennyroyal Plateau regions is the presence of small, rocky glades. Broadly speaking, a glade is any clearing in a forest. But in our part of the country, it tends to refer to areas with a shallow soil and a limestone bedrock, usually on south- or west-facing slopes. Without trees shading everything out, a rich layer of grasses and forbs emerges. As islands of grassland within larger forested areas, they tend to have high rates of endemism, or plants found only within one, relatively small area. Some plants can be found only in a few counties (like Kentucky gladecress, Leavenworthia exigua var. laciniata) or a narrow region, like the Interior Low Plateau, which runs from northern Alabama, through central Tennessee and Kentucky and into south-central Indiana.

Their isolation means that glades separated by only a few miles can have surprisingly different plant communities. In Harrison County, Indiana, which has similar shallow soils and limestone bedrock as Kentucky’s Bluegrass Region, one glade may have hundreds of Echinacea and a similar one walking distance away won’t have any.

Sign Up for the Field Trip

Because of the fragile nature of glade plant communities, we are limiting sign-ups to 10 people.

Wildflower Weekend 2022

by Heidi Braunreiter, KNPS Vice President & Jeff Nelson, KNPS President

From April 8th through the 10th, over 100 native plant enthusiasts came together to enjoy KNPS’ first, in-person, Wildflower Weekend since 2019. Although temperatures were cool and skies were damp at Natural Bridge SRP, spirits were high as folks dressed for the weather and enjoyed 14 different native plant walks led by an incredible group of expert botanists. Saturday night, a large group of KNPS members and friends met in the Woodland Center for presentations by Ted Brancheau, Nick Koenig, and the keynote speaker, Mike Homoya.

Wildflower Walks

Beginning at noon on Friday and ending Sunday morning, fourteen wildflower walks, led by some of the best botanists in the country, explored the amazing diversity of the plant communities in Natural Bridge SRP and the Red River Gorge. Here’s some shots from the walks.

Carolina Vetch (Vicia carolina)
Red trillium (Trillium erectum)
Search for sweet pinesap.
Sweet pinesap (Monotropsis odorata)
Striped wintergreen (Chimaphila maculata)
Virginia pennywort (Obolaria virginica)
Bishop’s cap (Mitella diphylla)
Members & Friends Friday Evening Campfire
Woodland phlox (Phlox divaricata)
Trailing arbutus (Epigaea repens)
Downy serviceberry(Amelanchier arborea)
Lichen walk
Cranefly orchid (Tipularia discolor)
Long-spurred violet (Viola rostrata)
Rock Bridge Trail

Discussions about next year’s Wildflower Weekend 2023 are already happening. Dates and the location are not set yet, but be thinking about the first half of April as the general time-frame. If you have any thoughts about how the event could be made better, we would love to hear from you. If you would like to lead or co-lead a walk next year, let us know. KYPlants@knps.org.

The sweet, sweet pinesap (Monotropsis odorata)

Tara Littlefield, OKNP Botanist, KNPS board member

The sweet, sweet pinesap (Monotropsis odorata), a globally rare little herbaceous plant related to the heath family (now placed in the family Monotropaceae, formerly in the Ericaceae), gets its name from the sweet, clove like scent it emits in the early spring. It is one of those plants that you can find just by using your nose. In fact, you would have better luck finding this plant by its smell rather than sight as it’s a master of disguise, camouflaging its tiny self (just a couple inches tall) among the oak and pine leaf litter in the acidic uplands of the Appalachians.

In addition to its diminutive size, camouflaged adaptations, and strong sweet odor, it is even more of an oddity in the plant world. This little hidden plant gets its energy NOT from the sun, a characteristic plant trait, but from partnering up with mycorrhizal fungi in the soil! No need to photosynthesize and be green if you have friendly fungus among us to help you out. There are not that many plants that have chosen this path of forgoing the sun and going all in with fungal co evolution. These same mycorrhizal fungi are also attached to the roots of the oaks and pines of the acidic Appalachian ridgetop forests and serve an important role of creating an underground network of plants and fungi communicating and sharing nutrients for survival. They call this type of plant a mycoheterotroph-a plant that gets its energy from mycorrhizal fungi.

Pollen from the sweet pinesap falls to the ground. @Littlefield.

One of my favorite springtime rituals in Kentucky is to visit the Red River Gorge at the end of March to early April and use my nose to locate patches of sweet pinesap while hiking along the trails of the upland ridges. During the KNPS wildflower weekend this year, a group of excited plant enthusiasts did just that. Walking the pine oak ridge tops, our group took in the scenes of chestnut oaks, scraggly pitch and Virginia pines, and among the little violets, bluets and tufts of pin cushion and broom moss, a faint sweet smell became stronger, until it was so strong our group stopped and knew we were upon a sweet pinesap population. Looking around the leaf litter, we finally located the sweet pine sap, and we all dropped to the ground to view this little beauty in all is glory, enamored by its wonderful smell and amazing adaptations for survival.