Siskiyou Lewisia

Lewisia cotyledon

Native to:
United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Montiaceae
Genus:
Lewisia
Species:
Lewisia cotyledon
USDA Symbol:
LECO5

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
30 cm
Light Requirements:
Part Shade
Drought Tolerance:
High
Bloom Months:
apr,may,jun,jul
Bloom Colors:
pink, white, orange, yellow, magenta, salmon

Garden & Ecology Notes

Wildlife Value:
hummingbirds
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rocky, well-drained, nutrient-poor soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to rocky outcrops and scree slopes

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–90 days
Germination Time:
14–60 days
Notes:
Requires light for germination; sow on surface. Cold stratification improves germination rates significantly.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Notes: Light required for germination; do not cover seed.

Source: Claude AI

ORGHPS Germination Guide: Sow @ 4C for 3 weeks, then place @ 20C.

Source: Ontario Rock Garden & Hardy Plant Society