Trillium luteum
Yellow Wakerobin, Yellow Wood Trillium, Wood Lily
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A critically endangered Ontario wildflower that is quite unusual.
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Family |
Melanthiaceae |
Genus |
Trillium |
Species |
luteum |
Category |
Bulbs, Perennials, Weeds |
Synonyms |
Trillium sessile var. luteum, Trillium cuneatum, Trillium viride |
USDA Hardiness Zone |
4 - 8 |
Canadian Hardiness Zone |
2a - 8a |
RHS Hardiness Zone |
H4 - H7 |
Temperature (°C) |
-35 - (-7) |
Temperature (°F) |
-30 - 20 |
Height |
30 - 45 cm |
Spread |
30 - 45 cm |
General Description |
Trillium luteum is a rare, endangered, rhizomatous, herbaceous perennial with interesting, green mottled leaves and atypical, green-yellow flowers. |
Landscape |
Trilliums make a classic addition to a shady woodland garden. Good ground cover: will spread slowly via rhizomes. |
Cultivation |
Grow in a sheltered location, part to full shade, in moderately moist, well-drained, humus, acidic to neutral soil. Water regularly; leaf dieback will occur by mid-summer especially if soil dries out. Intolerant to transplanting, should not be dug in the wild. Mulch with leaf mould in autumn. |
Growth |
Fast |
Pests |
Possible pests include: slugs and snails. No serious diseases to note. |
Leaf Description |
In groups of three, mottled different shades of green, broad, lanceolate to rounded, up to 10 cm long, evenly spaced atop an erect, naked, unbranched stem. |
Flower Description |
Showy, terminal, solitary, up to 5 cm high, 3 narrow sepals are green, surrounding 3 erect, yellow-green petals that curl inwards at the tip. May have a faint lemon scent. |
Notable Specimens |
The A.M. Cuddy Gardens, Strathroy, Ontario, Canada. |
Propagation |
By seed: as soon as it is ripe plant in pots and keep in a shady cold frame. It will take 5 - 7 years to flower. Also by division of rhizomes after flowering. |