🌿 Understory GuidePlant FinderGuild Builder

threeflower ticktrefoil

Desmodium triflorum · Fabaceae

threeflower ticktrefoil (Desmodium triflorum)
Photo: no rights reserved · CC0 · via iNaturalist

threeflower ticktrefoil (Desmodium triflorum) is a perennial herbaceous plant in the Fabaceae family. It is introduced to North America rather than native. USDA records it as hardy in zone 8 and warmer, down to about 16°F.

At a glance

Typeforb-herb USDA
Lifecycleperennial USDA
Native statusintroduced USDA
Mature height1 ft USDA
Lightpart-shade USDA
Soil pH5–6 USDA
Flower colorPurple USDA
Hardiness zones8 and warmer USDA
Guild layerground-cover Derived

USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.

Growing conditions

It grows in partial shade. Its drought tolerance is rated high. It will not tolerate waterlogged soil — USDA rates its anaerobic tolerance as none. It is recorded on soils from pH 5 to 6 — acidic ground. Its cold limit is zone 8.

Size and growth

At maturity it reaches about 1 ft, making it a low, mat-forming plant.

Foliage, flower and season

Summer foliage is green, medium in texture. Its flowers are not conspicuous — a plant for form and foliage. Its active growth period is summer. USDA rates its lifespan as short, so plan on replacing or resowing it rather than treating it as permanent structure.

What the site needs to provide

USDA records it across sites receiving 17 to 70 inches of annual precipitation. It needs at least 294 frost-free days to finish its season. It roots to at least 12 inches. Fertility requirement: medium.

Propagating it

Seed is the only propagation method USDA lists. Division and cuttings are not listed as options. USDA records no cold-stratification requirement, so seed should germinate without a chilling period.

Resilience and wildlife

Browsing animals rate it barely palatable — the sourced basis for calling it deer-resistant. Its fire tolerance is rated none. Its growth form is recorded as multiple stem.

Role in a guild

Ground cover. In a layered planting this is the lowest layer — it shades soil, holds moisture, and suppresses weeds. The layer is derived by a fixed rule from growth habit and mature height.

Build a guild around threeflower ticktrefoil →

Tags

deciduousdrought-toleranthedgesandy-soildeer-resistantacidic-soilintroducednitrogen-fixeredibleground-cover

Related plants

Others in Desmodium

Similar role and hardiness

Where this data comes from

Every value on this page comes from the USDA PLANTS database record for symbol DETR4, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.

Read our full data sources and methodology.

Find more plants for your zone with the Plant Finder.