In message , Kay
writes
Had these in a bed last year and assumed they would self-seed. By June
nothing had happened, so I moved other things into the gaps - and now
the bed is full of cerinthe seedlings, all but one only still at the
two-leaf stage. Surely at this stage they are unlikely to mature - but
then what is the purpose of self-seeding?

Don't forget they're not british. In the Med, they would want to
germinate at the end of a hot spell when the autumn rains are starting.

Ah - spot on, then. Thanks - I hadn't thought of that.
Well, maybe they'll manage a bit of a show in autumn. If I remember
right, they were pretty quick once they got started.

--
Klara, Gatwick basin