Bought a batch of 12 in individual maxi plugs from market, always like trying something new.
Very impressed. They took off like a rocket and four weeks later I am picking little shoots, and there are loads more little shoots in waiting.
http://www.nickys-nursery.co.uk/garden-shop/vegc-calabrese.htm
Though might get some from Moles.
I'm trying it for the first time this year and have to say am impressed so far. the plants stood up well to the rain/heat/rain/heat I've had and are producing lots of stems to eat. tastes good too :)