Ron wrote:

They need frost to break dormancy, and like to
gorw on cultivated ground. Best sown in the autumn (when poppies the
seedheads ripen naturally) for growing the next year.

Snip

Oh right, thanks. I sowed them in spring. Perhaps they will come up next
year if I dig over where I planted them.


I believe they can remain dormant for up to fifty years so you might have a
long wait!

Ron

They *CAN* they rarely ever do.. At least not all of them. They do
also, IIRC need a little light to germinate, hence the dormancy thing.
EG they lie buried for up to 50 years but dormancy is broken when they
are brought to the surface.
//
Jim