In article qLh4e.895053$Xk.35213@pd7tw3no,
"Robin H" wrote:

Im interested in saving seed from radicchio as my local supplier sells if
for more than crack occaine. (They dont sell rock. You have to get that
somewhere else.) Ive only ever saved seed from lettuce and spinach.

When do you plant it? How do you look after it? What do you do with it over
the winter? Im afraid that I havent figured out what my Zone is but I am in
a submediterranean climate. The variety that Im growing is some kind of
Palla Rossa (85 days).

Robin

Hello Robin,
I have grown radicchio here in Seattle (zone whacko). In a mild winter
it lives all year, but does go to flower. The flowers are a lovely blue
and the stalks get really tall, but the bees love them so I leave them.
I have always cut the stalks before they go to seed, but presumably,
like most flowers, if left alone they will produce seed. I have
volunteer mustard, arugula, garlic chives, oregano & marjoram from
flowers that have gone to seed.

Radicchio does OK as long as you don't have a killing frost/freeze.
Plant it any time now, unless you still have danger of deadly frost. It
does grow slowly, so be patient.

Angela