When to Transplant Trillium?

By midsummer, when the roots of trees commandeer all of the moisture in the soil, trilliums take the easy way out and begin to go dormant. The best time to plant and divide them is during dormancy in late summer and fall (around the time you would plant early-blooming bulbs).

Do trilliums transplant well?

Trilliums do not transplant well from the wild and many are actually endangered; therefore, they should be purchased from a reputable nursery that specializes in their care. They can also be propagated from seed, though flowering will not occur right away.

Can you dig up trilliums to transplant?

It is Illegal to Pick a Trillium

grandilforum, even though many think it is. You don't have the right to trespass onto other peoples property, but if they give you permission, you can remove their plants. It is illegal to remove them from government properties like provincial parks.