Old Man's Whiskers

Geum triflorum

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Geum
Species:
Geum triflorum
USDA Symbol:
GETR

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
45 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
High
Bloom Months:
apr,may,jun,jul
Bloom Colors:
pink, purple, red
Ground Cover:
Yes

Wildlife Benefits

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

Host Plant for Caterpillars

Army cutworm (Euxoa auxiliaris), Tetragma gei

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Fall Color:
red, orange
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Native to fire-maintained prairies; resprouts from rootstock following fire.

Soil Requirements

Soil Type:
well-drained, sandy or rocky soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers open prairies and rocky slopes

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–28 days
Notes:
Seeds germinate best with cold stratification. Light may improve germination rates.

The above propagation data sourced from Claude AI

Pre-treatment: Some sources suggest 5 months of outdoor cold, moist stratification, while others report high germination without pretreatment. Trials showed no benefit from stratification.

Establishment: There are conflicting reports on the need for pretreatment. Germination rates and times may vary depending on the source of the seed. Some seeds begin the germination process at low temperatures.

Source: npn.rngr.net

ORGHPS Germination Guide: Sow @ 20°C. Seed germinates within 3 months * subject to damping off

Source: Ontario Rock Garden & Hardy Plant Society