Gopher writes

In Dorset we have pretty heavy clay or the green variety. We have been
quite successful in growing Snakes Head Fritillary in a small
wildflower meadow created at the end of our garden. And they're
gradually spreading - but never quickly enough. I also collect the
seeds and broadcast them over the areas I want the SHF to populate but
it takes some 3 or so years (I believe) for the plants to flowers from seed.

Definitely! My 2-3 year-olds are still like fine grass.
--
Kay