Northern hemisphere, I’m in inland southern California. From experience in past years, my best timing is to plant seeds the beginning of August for a harvest in December through mid-February. Later plants don’t mature before the aphids start to kick off in spring. This year I was a little late, I only started them on August 14th, but now we’ve had temps in the upper 90s and even triple digits for a week and one by one they’re all bolting.

I’ve already started another batch of seedlings, maybe with netting I can keep the aphids off enough to get a harvest.