In message , Janice
writes
In October I bought an inexpensive blue poppy (meconopsis?) from Morrisons
supermarket. I stuck the plant in a pot of all-purpose soil and it's now
overwintering in my ever-so-slightly-heated greenhouse.

I understand these plants are difficult to grow. In what way are they
difficult?

Their reputation stems from the fact that they resent root disturbance
and will often die if allowed to flower in the first or second year from
seed.

Growing them from seed I see roughly 10% survival for each transplanting
stage. Fortunately the seed is very fine so you get plenty.

Any hints and tips on cultivation, soil requirements, etc., greatly
appreciated.

Moist dapped shade slightly acid soil. It will either grow or expire
quickly. Once happy they grow nicely and can even self seed, but unless
the planting location is to their liking they will expire. Any rough
handling will ensure the plant rots off before establishing.

Regards,
--
Martin Brown