Large-flowered Trillium
Three broad leaves, three white petals, and a flower held above a single whorl mark Ohio’s woodland wildflower.
Artwork inspired by Alice Schille
Large-flowered trillium rises from a persistent underground rhizome and may take years to reach flowering size. The white petals often turn pink as they age, while ants disperse seeds by carrying away a nutritious attachment. A colony can therefore record a long history of relatively intact woodland.
Picking the flower or leaves removes the plant’s chance to replenish its rhizome and may end flowering for years. Photograph from the trail, keep pets from trampling colonies, and notice companion plants and canopy stage. Deer browsing and invasive understory plants can thin a display even when the trees above look healthy.
- Plan
- One whorl of three broad leaves
- Flower
- Three petals aging white to pink
- Ohio link
- Official state wildflower
Quick guide
- Count in threes
- Leaves, sepals, and petals follow the name.
- Check flower position
- The bloom sits above the leaf whorl on a stalk.
Recognize and observe
- Count in threes
- Leaves, sepals, and petals follow the name.
- Check flower position
- The bloom sits above the leaf whorl on a stalk.
- Leave every stem
- Do not pick, transplant, or clear leaves around it.
- Read the forest
- A colony reflects canopy, deer pressure, soil, and time.
Good to know
Not every three-leaved woodland plant is a trillium. “Leaves of three” poison-ivy advice refers to three separate leaflets, a different structure.
Notice these
- One whorl of three broad leaves
- Three petals aging white to pink
- Official state wildflower