I'm new to zone 5 and we planted them last spring. (Started them in the basement)
I guess it was summer by the time they grew big enough to produce and perhaps then it was too hot for them.
Now after months I finally got some sprouts big enough to harvest.
So are they a cold weather crop?
Do you plant them in the summer for a fall crop?
Do you plant them late winter for a spring crop?
The few I got were delish, but it's snowing today and I'm sure too cold for the plant to survive much longer.
What is the secret to growing lots of lovely brussel sprouts?