North America Native Plant

Ticktrefoil

Botanical name: Desmodium

USDA symbol: DESMO

Life cycle: annual

Habit: vine

Native status: Native to Canada âš˜ Non-native, reproduces and persists in the wild in Hawaii âš˜ It's either native or not native in the lower 48 states âš˜ Native to Navassa Island âš˜ It's either native or not native in Pacific Basin excluding Hawaii âš˜ Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Ticktrefoil: The Sticky-Seeded Native That’s More Useful Than You Think If you’ve ever taken a hike through meadows or woodland edges and found mysterious three-part seed pods clinging to your socks, you’ve likely encountered ticktrefoil (Desmodium). This humble native wildflower might not win any beauty contests, but it’s quietly doing ...

Ticktrefoil: The Sticky-Seeded Native That’s More Useful Than You Think

If you’ve ever taken a hike through meadows or woodland edges and found mysterious three-part seed pods clinging to your socks, you’ve likely encountered ticktrefoil (Desmodium). This humble native wildflower might not win any beauty contests, but it’s quietly doing important work in natural ecosystems across North America. Let’s explore whether this unassuming plant deserves a spot in your garden.

What is Ticktrefoil?

Ticktrefoil, scientifically known as Desmodium, is a genus of forb herbs that lack significant woody tissue above ground. These plants can be either annual or perennial, depending on the species, and are characterized by their distinctive three-part compound leaves and small clusters of pink to purple flowers. The name ticktrefoil comes from the plant’s notorious seed pods, which have tiny hooks that allow them to tick or stick to passing animals (and hikers!) for seed dispersal.

Where Does Ticktrefoil Grow?

Ticktrefoil has an impressively wide distribution across North America. You can find various species growing naturally in states from Alabama to Wisconsin, and from Arizona to Maine. The plant is also found throughout much of Canada, including Manitoba, New Brunswick, Nova Scotia, Ontario, and Quebec. It’s native to many U.S. territories as well, including Puerto Rico and the U.S. Virgin Islands, though it’s considered non-native in Hawaii.

Garden Appeal: Beauty in Simplicity

Let’s be honest – ticktrefoil won’t stop traffic with its looks. The flowers are small and relatively inconspicuous, typically appearing in pink to purple clusters. However, the plant has a quiet charm with its neat, three-part leaves and upright growth habit. It’s the kind of plant that adds texture and natural movement to a garden without demanding center stage.

Why Gardeners Choose (or Skip) Ticktrefoil

The Good

  • Extremely low maintenance once established
  • Drought tolerant and adaptable to various soil conditions
  • Provides nectar for bees, butterflies, and other small pollinators
  • Self-seeds readily for natural garden expansion
  • Great for naturalized areas and meadow gardens
  • Native plant that supports local ecosystems

The Challenges

  • Can be aggressive self-seeder in some conditions
  • Seed pods stick to clothing and pet fur
  • Not particularly showy or ornamental
  • Wildlife use it sparingly (only 2-5% of diet for most animals)

Perfect Garden Roles

Ticktrefoil shines in specific garden situations:

  • Native plant gardens: Adds authentic local flora
  • Meadow and prairie restorations: Helps establish natural plant communities
  • Woodland edges: Perfect transition plant between forest and open areas
  • Low-maintenance landscapes: Thrives with minimal care
  • Pollinator gardens: Provides nectar sources for smaller beneficial insects

Growing Ticktrefoil Successfully

Ideal Growing Conditions

While specific growing requirements can vary among Desmodium species, most ticktrefoils are remarkably adaptable. They generally prefer well-drained soils and can tolerate drought conditions once established. These plants typically thrive in full sun to partial shade conditions.

Planting and Care Tips

  • Plant in spring after the last frost date
  • Choose a location with good drainage
  • Water regularly during the first growing season to establish roots
  • Once established, minimal watering is needed
  • Allow plants to self-seed if you want natural spread
  • Cut back in late fall or early spring if desired

Pollinator and Wildlife Benefits

While ticktrefoil isn’t a wildlife superstar, it does provide valuable ecosystem services. The small flowers offer nectar to bees, butterflies, and other pollinators, particularly beneficial insects that are often overlooked. Various animals, including large mammals, small mammals, and terrestrial birds, do utilize ticktrefoil for food and cover, though it typically represents only 2-5% of their diet.

Should You Plant Ticktrefoil?

Ticktrefoil is best suited for gardeners who appreciate native plants and want to create naturalized landscapes with minimal maintenance. If you’re looking for a showy ornamental plant, this probably isn’t your best choice. However, if you’re establishing a meadow garden, creating wildlife habitat, or simply want to support local pollinators with minimal effort, ticktrefoil could be a valuable addition.

For gardeners in areas where ticktrefoil isn’t native (such as Hawaii), consider researching local native alternatives that can provide similar ecological benefits without the risk of naturalization outside their intended range.

Remember, gardening with native plants like ticktrefoil isn’t just about individual plant beauty – it’s about participating in the larger ecosystem and supporting the web of life that makes our local environments thrive.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

2-5% of diet

Sparsely used as cover

Large animals

2-5% of diet

Sparsely used as cover

Terrestrial birds

2-5% of diet

Sparsely used as cover

Water birds

not a food source

not a source of cover

Sources:

Gee, K.L., M.D. Porter, S. Demarais, F.C. Bryant, and G.V. Vreede. 1994. White-tailed deer: Their foods and management in the Cross Timbers. Ardmore.Martin, A.C., H.S. Zim, and A.L. Nelson. 1951. American wildlife and plants: A guide to wildlife food habits. Dover Publications. New York.

Ticktrefoil

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Desmodium Desv. - ticktrefoil

Species

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA