My growing zone is 4b/5a. Live in northern MI; main growing season starts @ end of May (April for cool weather stuff).
Normally, broccoli/cabbage is started from seed indoors, hardened off, then transplanted; otherwise they won't mature before hot weather sets in.
However, I've picked very early maturing varieties for broccoli and cabbage; they take about 45 days (this doesn't include germination time).
4-6 weeks normally for broccoli/cabbage. However this time frame IS their days to maturity. Can I direct sow outdoors (w/protection)
They'll be in raised beds/containers, so I can move if need be.
Possible w/early maturing lettuce? Know it loves cool weather for germination and growing; for days to maturity, 40-50 days.