Red Trillium - Trillium sulcatum
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Bare Roots will be ready in April for pick up or shipping
Phonetic: TRIL-ee-um sul-KAY-tum
Red Trillium, is a perennial that grows naturally in a partial to full shaded environment. It prefers moist soil—conditions typical of mature, undisturbed woodlands. This trillium often grows on slopes and in coves where leaf litter provides nutrients and the soil remains evenly moist throughout the growing season.
Red Trillium blooms in mid- to late spring, typically from April to May, depending on local climate. Each plant produces a single three-petaled flower held above a whorl of three leaves, with the deep red blooms. The flowers are pollinated primarily by early-season insects such as flies and beetles, which are attracted to their color and faint odor. After pollination, the plant forms a fleshy, berry-like capsule that matures in early summer. These fruits contain numerous seeds which attract ants that disperse the seeds through a process known as myrmecochory.
Red Trillium plays an important role in supporting early spring pollinators. Its flowers provide nectar and pollen to insects at a time when few other native woodland plants are in bloom. It is a host plant for the black-patched clepsis moth and the American angle shades moth. The plant’s seeds, dispersed by ants, contribute to the gradual regeneration of trillium colonies.
- Hardiness Zone: 4 - 7
- Sun Exposure: Shade, Part Shade
- Native Region: BONAP Map
- BONAP Map Key Color Guide: Map Color Key
- Flower Color: Red
- Bloom Time: April, May
- Soil Type: Moist, Medium
- Mature Plant Size: 1-2'H 1-3'W
- Plant Spacing: 1'
- Host Plant: Black Patched Clepsis Moth, American Angle Shades Moth
- Attracts: Bees, Birds, Butterflies,
- Landscape Uses: woodland garden, Shade garden, Ground cover
- Companion Plants: Christmas Fern, Virginia Bluebells, Foam Flower, Wild Ginger
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