If you live in Wisconsin or any zone 3-5, Broccoli is one of the easiest vegetables to grow if you start on time.
A member of the cabbage family, broccoli can be harvested several times during the summer growing season and in the fall growing season. Timing and temperature are critical for growing broccoli in Wisconsin.
Sow seeds indoors, one to two weeks before the last frost date. Keep soil temperature around 70º to 75ºF, and plants will germinate in 5-7 days.
Plant your broccoli to get at least 6 hours of daily sunlight in fertile, well-draining, moist soil with plenty of organic matter.
Broccoli needs 1 inch or more of water per week if temperatures are above 85ºF degrees. The best way to avoid pest problems is to keep your plants healthy and your garden clean.
Harvest broccoli when the head is firm but before any yellow shoots or flowers appear. Then, take a pair of garden shears or scissors and cut them at the base of the broccoli head.