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Summary
Physical Characteristics
Trillium undulatum is a PERENNIAL growing to 0.2 m (0ft 8in) by 0.2 m (0ft 8in).
See above for USDA hardiness. It is hardy to UK zone 4. It is in flower from May to June. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils and can grow in very acid soils.
It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Plant Habitats
Woodland Garden Dappled Shade; Shady Edge; not Deep Shade;
Edible Uses
Edible Parts: Leaves
Edible Uses:
Leaves - cooked. The young unfolding leaves make a good potherb[183].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Oxytoxic
The flowers, sepals and leaves have been eaten to accelerate the delivery of a child[257].
References More on Medicinal Uses
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Other Uses
References More on Other Uses
Cultivation details
Prefers a deep well-drained woodland or humus-rich soil in a somewhat shady position that remains moist in the summer[1, 42]. Prefers a neutral to slightly acid soil[200]. This species is often found in quite acid soils, seldom in alkaline soils[270]. Grows well in open woodland[1]. Succeeds in deep shade[188]. Succeeds in a sunny position if the soil does not dry out[42]. Any transplanting is best done whilst the plants are in flower[200]. Plants can flower in two years from seed[138]. Members of this genus are rarely if ever troubled by browsing deer or rabbits[233], though slugs are very fond of the leaves[238].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
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Plant Propagation
Seed - best sown in a shaded cold frame as soon as it is ripe[134, 200]. Stored seed should be sown in late winter or early spring. Seed usually germinates within 1 - 3 months at 15°c. Another report says that seeds produce a root after the first cold stratification but no shoot is produced until after a second winter[138], whilst yet another report says that the seed can take 3 years to germinate[238]. The seedlings are prone to damp off and must therefore be watered with care and given plenty of fresh air[138]. The young plants need to be overwintered in a cold frame for the first year and can then be planted out in late spring. It is very important that the pots become neither too dry nor too wet[138]. Division with care when the plants die down after flowering[200]. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the following spring.
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: Canada (Québec, Nova Scotia, Ontario, Prince Edward Island, New Brunswick), United States (Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Connecticut, Georgia, Kentucky, Maryland, North Carolina, South Carolina, Virginia, Tennessee)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
| Related Plants
|
| Latin Name | Common Name | Habit | Height | Hardiness | Growth | Soil | Shade | Moisture | Edible | Medicinal | Other |
| Trillium erectum | Beth Root - Indian Balm, Red trillium, Wakerobin, Purple Trillium | Perennial | 0.4 |
4-9
| S | LMH | FSN | M | 2 | 3 | |
| Trillium grandiflorum | White Trillium, Large Flower Trillium, White Trillium, Large Flower Wakerobin, Large Flowered Tril | Perennial | 0.4 |
4-9
| S | LMH | FSN | M | 1 | 2 | |
| Trillium kamtschaticum | | Perennial | 0.3 |
4-8
| | LMH | FSN | M | 1 | 2 | |
| Trillium ovatum | Wakerobin, Pacific trillium, Oettinger's trillium, Hibberson's trillium | Perennial | 0.4 |
4-8
| | LMH | FSN | M | 1 | 1 | |
| Trillium pendulum | | Perennial | 0.3 |
-
| | LMH | FSN | M | 0 | 1 | |
| Trillium sessile | Toadshade | Perennial | 0.4 |
4-8
| | LMH | FSN | M | 2 | 1 | |
| Trillium smallii | | Perennial | 0.4 |
4-8
| | LMH | FSN | M | 1 | 0 | |
| Trillium tschonoskii | | Perennial | 0.2 |
4-8
| | LMH | FSN | M | 1 | 2 | |
|
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
Willd.
Botanical References
200235270
Links / References
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Readers comment
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