Sowing BETONY on 'pure' clay soil?
Sorry my poor English.
I dug a large pond in my garden and I spread the earth ( in fact 100% clay from digging ) on a very low part of the garden:
a good layer on the ground of several centimeters of clay.
i reserved top soil for later use.
I would sow direct betony seeds on this clay soil; In fact, this soil is made of pure clay only.
-Is betony seeds will grow on the 'pure' clay soil? Otherwise, what to do?
-Is it a good time to sow betony seeds? (we are in Fall) or it would be better to wait until spring?
-Do you have any advices for me? (Witch material to cover the seeds, etc Ã¯Â¿Â½)
Here, in nothern part of France, Betony is very rare & endangered specie.
I love this plant!
Thank you in advance