Trillium undulatum
Painted Trillium · Paint Trillium
About the plant
What it is and where it grows — not part of any germination protocol.
The plant
- Habit
- Herbaceous Perennial, WildflowerExtension Gardener Plant Toolbox
- Habit
- rhizomatous geophytePlants of the World Online
- Height
- 0.7-2 ft20-60 cmExtension Gardener Plant Toolbox
- Spread
- 0.5-1 ft15-30 cmExtension Gardener Plant Toolbox
- Flower
- Pink, Purple/Lavender, Red/Burgundy, WhiteExtension Gardener Plant Toolbox
- Blooms
- SpringExtension Gardener Plant Toolbox
- Native range
- Canada, lower 48 statesPLANTS Database
- Hardiness zones
- 3-8Extension Gardener Plant Toolbox
Growing conditions
- Sun
- Deep shade; Partial ShadeExtension Gardener Plant Toolbox
- Soil
- High Organic MatterExtension Gardener Plant Toolbox
- Soil pH
- Acid (<6.0)Extension Gardener Plant Toolbox
- Moisture
- Good Drainage, Moist, Occasionally WetExtension Gardener Plant Toolbox
Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS.
Worth knowing
- Each white, wavy-edged petal has a reddish-purple V at its base. Bright red fruits follow in early fall. Lady Bird Johnson Wildflower Center: Trillium undulatum
Protocol
DerivedN. C. Deno, 1998Difficulty High
Sow and cover
Temperature: 70°F 21°C Light: dark
No stated waiting before sowing. Then 84 days to germinate.
14% germination in 84 days.
How each step is done, in Deno’s words, and what Verified and Derived mean.
Germination trials
Readers’ own records of sowing this species, published after review. Share your trial · All trials
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