When does Trillium erectum bloom?

Trillium erectum flowers in April and May, appearing on the forest floor before the tree canopy fully leafs out.

What growing conditions suit Trillium erectum best?

This forb prefers part shade to full shade and medium to consistently moist, humus-rich soil similar to a deciduous forest floor.

What insects visit Trillium erectum flowers?

Bees, beetles, and flies are the main visitors to Trillium erectum flowers, with flies and beetles drawn in part by the blossom's faint carrion-like scent.

Does Trillium erectum stay green all year?

No. Trillium erectum is deciduous and dies back to its underground rhizome after flowering and setting seed in summer.

What color are Trillium erectum flowers?

The flowers are typically a deep maroon-red, which is why the plant is commonly called red trillium.

Is Birthroot HOA-friendly?

Birthroot takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Birthroot

Name: Pollinator Patch
Author: Pollinator Patch

Trillium erectum

Last reviewed: August 2026

Trillium erectum is a woodland forb with deep maroon-red flowers that bloom in April and May. It grows best in part shade with medium, evenly moist soil beneath deciduous forest canopy.

Toxicity unknown

Birthroot (Trillium erectum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part shade

Water

medium

Size

8"–16" H × 6"–12" W

Bloom

Apr, May

Native to

CT, DE, GA, IL and 18 more states

Pollinators

bees, beetles, flies

Before you buy

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Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Northern Lakes and Forests North Central Hardwood Forests Southern Michigan/Northern Indiana Drift Plains Huron/Erie Lake Plains Northeastern Highlands Northeastern Coastal Zone Northern Allegheny Plateau Erie Drift Plain Northern Forests Northern Piedmont Blue Ridge Ridge and Valley Eastern Temperate Forests Central Appalachians Western Allegheny Plateau Interior Plateau Acadian Plains and Hills Eastern Great Lakes Lowlands

Birthroot is a charming native wildflower that produces distinctive three-petaled dark red flowers above a whorl of three broad leaves in spring. This woodland perennial goes dormant by midsummer, disappearing completely until the following spring. It thrives in shaded areas with consistent moisture and rich, organic soil.

Growing Birthroot

Grow Birthroot in part shade and medium water. Mature plants reach 8 to 16 inches tall and spread 6 to 12 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Birthroot takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Goes completely dormant by midsummer leaving empty spaces
Looks like a wild woodland plant rather than cultivated garden flower
Very slow to establish and naturalize

Wildlife value

The flowers attract early season pollinators including native bees, beetles, and flies. The seeds are dispersed by ants, helping to establish new colonies in suitable woodland areas.

Common questions

When does Trillium erectum bloom?: Trillium erectum flowers in April and May, appearing on the forest floor before the tree canopy fully leafs out.
What growing conditions suit Trillium erectum best?: This forb prefers part shade to full shade and medium to consistently moist, humus-rich soil similar to a deciduous forest floor.
What insects visit Trillium erectum flowers?: Bees, beetles, and flies are the main visitors to Trillium erectum flowers, with flies and beetles drawn in part by the blossom's faint carrion-like scent.
Does Trillium erectum stay green all year?: No. Trillium erectum is deciduous and dies back to its underground rhizome after flowering and setting seed in summer.
What color are Trillium erectum flowers?: The flowers are typically a deep maroon-red, which is why the plant is commonly called red trillium.
Is Birthroot HOA-friendly?: Birthroot takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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