Yellow Trillium
Trillium luteum
Yellow Trillium is a bulb for bulb layer, suited to shade and partial shade and loam or acid soil, flowering Apr, May, Jun.
| Type | Bulb |
|---|---|
| Mature height | 30 cm |
| Spread | 30 cm |
| Aspect | shade and partial shade |
| Foliage | Deciduous |
| Hardiness | USDA 5a-8b, RHS H6 |
| Pollinator-friendly | Yes |
| Pet-safe | No |
Where to use it in a border
At around 30 cm, it sits best along the front edge, where a low, spreading habit reads best. Give it about 30 cm of room to spread, roughly 3 to the metre when planted in a drift. It is hardy across USDA zones 5a to 8b and rated H6 by the RHS, so check it suits your area before planting.
It appears in our lists of shade, acid soil, pollinator-friendly plants.
Border Builder uses Yellow Trillium's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.
Flowering through the year
Worth knowing
- It tolerates acid soil but dislikes shallow chalk.
- It tolerates a shaded, north-facing spot.
- Not recorded as pet-safe; site it away from pets that graze if that matters to you.
- Its flowers are valued by bees and other pollinators.
Good companions
Plants that share its conditions and style, chosen to complement its place in the border:
- Astilbe 'Fanal'to flower when it does not
- Astilbe 'Visions'to edge in front
- Bergenia 'Purpurea'to edge in front
- Bigleaf Hydrangea 'Endless Summer'for height behind it
- Blue Windflowerto edge in front
- Bugbane 'Black Negligee'for height behind it
Garden styles
Cottage garden Shade cottage Woodland
Sources
Bloom timing and hardiness drawn from: