Trillium is a wonderful genus for light shade or a peat garden. They will, in time, establish clumps but they need at least a season or two, to establish, after which they increase slowly. Full establishment will take further time, then the plant slowly clumps.
Trillium are long-lived and trouble free but a good display is for the patient gardener. In cultivation they like a rich soil and with the exception of Trillium undulatum they are indifferent to acid or lime soils. The occurrence of some Trillium only on lime, in the wild, is to do with drainage and seedling mortality and nothing to do with any love for lime.
Leaf mould, peat and manure can all be worked in with advantage. The correct soil structure is the most important factor - get the soil right and your Trillium will thrive, get it wrong (heavy, wet, sticky, badly draining or hot, sunny and arid) and they will survive (Trillium are tolerant and want to live!) but they will linger and do poorly.
Trillium can be ordered from both our Autumn and Spring lists. Trillium are late ripening items.