On May 30, 9:34*am, Sally Thompson wrote:

That's interesting Kay since this particular part of the garden has the
poorest soil - it took years for it to even green up a little. *It must
thrive on that kind of soil.

There's an industrial site in Bolton which has amazingly high pH. If I
remember correctly, it was decades before any plant life appeared. But
it's now home to about half a dozen different varieties of orchid -
they can survive in the really poor soil, and gain the benefit of less
competition with other plants.
--
Kay