Toadshade
Trillium sessile
- Native to:
- United States
Doppelbrau
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Melanthiaceae
- Genus:
- Trillium
- Species:
- Trillium sessile
- USDA Symbol:
- TRSE2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 30 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- apr,may,jun
- Bloom Colors:
- maroon, red, brown, yellow, green
Garden & Ecology Notes
- Wildlife Value:
- ants
- Fragrant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers shaded woodland environments
Propagation & Germination
- Stratification:
- Warm then cold/moist stratification (double dormancy) — 150–365 days
- Germination Time:
- 365–730 days
- Notes:
- Double dormancy requiring warm then cold stratification; seeds may take 2+ years to germinate and another 5-7 years to flower.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds are warm and cold stratified
Establishment: C. borealis is found within temperate deciduous forests of North America.
Source: npn.rngr.net
ORGHPS Germination Guide: Sow immediately, Either the viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience. Expose to fluctuation outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in the spring. * seeds must be stored cold and moist; germination is unlikely after storage >6 months; if seeds are received dry, try hydrating in damp paper towel @ 20°C for 1 week; during 3 months @ 20° a radicle is formed; then 4°C for at least 86 days will trigger emergence of a cotyledon which will appear as the temperature increases in spring; no more leaves are formed that year; if sown early enough, a cotyledon may emerge first spring but usually not until second spring; keep seeds in pots for 2 years