Trillium sessile

I think I can say without fear of contradiction that Trillium represent something of an obsession. I love them. I think they are simply perfect. I see no fault with any one of the variety you care to mention. But there is a problem; Soil. I am in the midst of a chalk-bound range of hills. I sit on clay and, whilst the chalk is in short supply this side of the hill, it is evident that it is not acidic in any way!
However, with a goodly application of leafmould and well rotted compost it is possible to produce a happy plant such as the above. Oh Happy Day!