for Southeastern Wisconsin. In Late March or Early April, sow seeds indoors of: In Mid- to Late April, sow seeds indoors of: In Late April, sow seeds directly into the garden of: In Early May, transplant plants into the garden of: In Mid-May, sow seeds directly into the garden of: Click to see full answer. In respect to this, when should I plant tomatoes in Wisconsin?The planting dates for tomatoes range from early May in much of southern Wisconsin to early June in the northern part of the state. Wait to plant until the chance for the last killing frost has passed and the soil temperature is at least 50˚F. Before planting tomatoes, they must be prepared for outdoor conditions.One may also ask, when should I plant in my area? For most crops, you should start seeds indoors about 6–8 weeks before your last spring frost date. This gives the plants plenty of time to grow large and healthy enough to survive their eventual transplanting to the garden. Consult our Planting Calendar to see the best time to start seeds in your area. Also question is, what grows well in Wisconsin? Spring garden calendar: When to plant fruits and vegetables in Wisconsin Beets. Carrots. Chard. Lettuce. Onion Sets* Peas. Seed Potatoes. Radishes. What planting zone is Wisconsin?Wisconsin has three cold hardiness zones – Zone 3 (Northwestern WI), Zone 4 (North, Central, Western WI) and Zone 5 (Southern and eastern WI up past Green Bay and Apostle Islands).
