Showy Ticktrefoil

Desmodium canadense

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Desmodium
Species:
Desmodium canadense
USDA Symbol:
DECA7

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
180 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jul,aug,sep
Bloom Colors:
pink, purple

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Host Plant for Caterpillars

Hoary Edge (Achalarus lyciades), Northern Cloudywing (Thorybes pylades)

Reported Fauna Sightings

Bees: American bumble bee (Bombus pensylvanicus), Black and (Bombus auricomus), Brown-belted bumble (Bombus griseocollis), Common eastern (Bombus impatiens), Half-black bumble (Bombus vagans), Northern amber (Bombus borealis), Red-belted bumble (Bombus rufocinctus), 🛑Rusty-patched bumble (Bombus affinis), Two-spotted bumble (Bombus bimaculatus) Butterflies:Eastern Tailed-Blue (Cupido comyntas)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, birds, small mammals
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from deep taproot following fire. Fire helps reduce competition and stimulates growth.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers open, sunny locations

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Scarification of seed coat required before cold stratification. Inoculation with Rhizobium bacteria beneficial.

The above propagation data sourced from Claude AI

Pre-treatment: Scarification by rubbing between two pieces of coarse emery cloth. Stratification by mixing with damp sand and storing at 38°F for 4 weeks in a sealed plastic bag. Inoculation with inoculum for Desmodium.

Source: npn.rngr.net

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires scarification.

Source: Ontario Rock Garden & Hardy Plant Society