Alpine Lewisia

Lewisia pygmaea

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Montiaceae
Genus:
Lewisia
Species:
Lewisia pygmaea
USDA Symbol:
LEPY2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
10 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
may,jun,jul,aug
Bloom Colors:
pink, white

Garden & Ecology Notes

Deer Resistant:
Yes

Soil Requirements

Soil Type:
gritty, well-drained, rocky soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to alpine and subalpine regions

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–90 days
Germination Time:
14–60 days
Notes:
Requires light for germination. Seeds benefit from cold stratification and may germinate erratically.

The above propagation data sourced from Claude AI

Pre-treatment: 60 to 90 day cold, moist stratification. Seeds are placed in moist paper towels inserted into an opened zip-lock bag and placed in the refrigerator at 1 to 3 C. Germination occurs in early spring at temperatures slightly above freezing to 10C.

Establishment: L. pygmaea occurs in moist to dry places in the mountains to above tree line; Cascade and Olympic mountains of Washington, south to California, east to Montana, New Mexico, and Arizona.

Source: npn.rngr.net

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

Source: Ontario Rock Garden & Hardy Plant Society