You are jumping the gun! I will not start the seeds untill the first week of March,ask me in september for my evaluation.
Only two seeds out of the whole package sprouted... Disappointed
I started them indoors in zone 7. Then I planted them in 5 gallon buckets and got gorgeous red brussels sprouts. The deer don't seem to like walking on the asphalt driveway and eating from the container garden, so 1/2 acre is basically unused while I grow mostly everything in pots, tubs and buckets. These sprouts are wonderful.