Best Vegetables to Grow in Wisconsin

Peas are one of the few crops that actively prefer Wisconsin's cold, wet spring. Direct-sow as soon as the soil is workable — often early to mid-April — and plants will mature at 55–70 days well ahead of the summer heat that causes sugar to turn starchy. In northern Wisconsin where summers stay cool, a second sowing in late June can yield a fall harvest. Choose a short-vined bush variety like 'Maestro' to skip the trellis.

Broccoli's 60–90-day season fits neatly into Wisconsin's spring if you start transplants indoors in early to mid-March and set them out in late April. Cool night temperatures during head formation produce tight, dense curds; Wisconsin's May and June deliver exactly that. A second planting started in late June for transplanting in early August will head up in September's chill — often the better of the two crops. 'Belstar' holds well in cool conditions without yellowing.

Cabbage is one of the most forgiving long-season crops for Wisconsin because it tolerates both spring frost and fall cold with equal ease, and its 60–100-day window can be split between a spring and a fall planting. Start spring heads indoors in late February, transplant in late April, and harvest by July before summer heat cracks heads. For a storage crop, start a second round in June for a September–October harvest. 'Storage No. 4' and 'Danish Ballhead' overwinter well in a root cellar.

Cauliflower demands the most attention of Wisconsin's brassicas — it requires consistently cool temperatures, even moisture, and blanching when heads are the size of a golf ball to prevent yellowing. Despite a difficulty rating of 3/3, its 60–100-day season aligns well with a fall planting started indoors in late June and transplanted in early August, when cooling nights do most of the work. Avoid spring planting in southern Wisconsin, where rapid June heat causes buttoning. 'Cheddar' (orange) is more heat-tolerant and slightly more forgiving for beginners.

Kale may be the single best-adapted crop on this list for Wisconsin: it tolerates hard frost down to 20°F, the flavor genuinely improves after the first freeze as starches convert to sugars, and it can be harvested through November in most years. Direct-sow in late July for a fall stand that needs no babysitting; for spring, transplant in late April. 'Red Russian' and 'Winterbor' are proven performers across Zone 5. Harvest outer leaves progressively to keep the plant producing for months.

Lettuce's 30–60-day maturity makes it Wisconsin's fastest-returning crop and an ideal succession plant. Begin direct-sowing in mid-April under a row cover, and repeat every two to three weeks through late August to maintain a continuous harvest. The critical management task is pulling spring plantings before they bolt in July heat and replacing them with a fall succession started in late July. Loose-leaf types like 'Black Seeded Simpson' are far more bolt-resistant than heading types under Wisconsin's variable spring temperatures.

Spinach is even more cold-hardy than lettuce and can be direct-sown six weeks before last frost — meaning mid-April in most of Wisconsin — where it will germinate in soil as cold as 35°F. It completes a crop in 35–50 days, making two spring rounds possible before summer heat triggers bolting. The fall planting, direct-sown in late August, often outlasts lettuce by weeks. 'Bloomsdale Long Standing' is the standard choice for spring; 'Regiment' holds longer without bolting as temperatures climb.

Swiss chard bridges a gap no other crop on this list fills: it tolerates both spring frost and the summer heat spells Wisconsin gets in July and August, making it one of the few greens that produces continuously from May through hard frost in October. Direct-sow in mid-May after the threat of a killing freeze passes, and harvest outer stalks weekly. A single sowing sustains a family through the whole season. 'Bright Lights' is durable and productive; 'Fordhook Giant' yields the largest, meatiest leaves.

Carrots take 60–80 days and must be direct-sown — they don't tolerate transplanting — so a mid-April sowing in southern Wisconsin yields roots by late June. The fall crop, sown in late June or early July, is usually superior: cool September soil concentrates sugars and the roots can stay in the ground through light frosts for extended harvest. Wisconsin's frequent glacial-till soils need deep loosening to a foot; raised beds filled with sandy loam prevent the forking and stunting that heavy clay causes. 'Scarlet Nantes' and 'Danvers 126' perform consistently in Midwestern soils.

Beets are efficient in Wisconsin because both the root and the greens are edible, effectively doubling yield from a single planting. At 50–70 days they fit multiple successions between April and late July, and they tolerate light frost at both ends of the season. For the best roots, direct-sow 1 inch apart and thin to 3–4 inches; crowded beets stay small. 'Detroit Dark Red' is reliable and uniform; 'Chioggia' handles heat slightly better for late-spring plantings that will mature in early July warmth.

Radishes mature in 25–35 days, faster than any other crop here, which makes them Wisconsin's most versatile space-filler. Sow them between slower crops like carrots and onions as living row markers — they germinate in days, mark the row, and are pulled before they compete. Begin in mid-April and sow every two weeks through late August; skip July in hot years as they go pithy and bolt quickly. 'Cherry Belle' stays crisp longer than most in warm soil; 'Daikon' types sown in August yield large, mild roots through October.

Onions require 90–120 days, pushing the practical limit of direct-seeding in Wisconsin; sets or transplants are the reliable path. Plant sets in early May for a mid-August harvest, or — for larger, better-storing bulbs — start seeds indoors in late January and transplant in late April. Wisconsin falls in the 'intermediate-day' crossover zone, so varieties matter: choose 'Candy' or 'Walla Walla' for intermediate-day performance rather than strictly short- or long-day types. Cure harvested bulbs in a warm, dry spot for three weeks before storage.

Garlic is uniquely suited to Wisconsin because it is planted in fall — typically early to mid-October, a few weeks before hard freeze — overwinters under a thick mulch of straw, and is harvested in late July, the longest but most hands-off crop in the garden. The cold Wisconsin winter is not a liability but a requirement: garlic needs vernalization to form proper bulb divisions. Plant hardneck varieties like 'German Red' or 'Music', which outperform softnecks in Zone 5 and produce larger cloves. Mulch with 4–6 inches of straw immediately after planting to prevent frost heave.

June-bearing strawberries are the best match for Wisconsin: they concentrate their crop into a 2–3-week window in June, timed precisely to the state's long days and warm post-frost temperatures, and they are far more cold-hardy than everbearing types. Plant certified disease-free crowns in early May with the crown at soil level — too deep or too shallow causes failure. 'Honeoye' and 'Jewel' are the benchmark varieties for Wisconsin, both bred for Zone 4–5 hardiness. Mulch beds with straw each November and remove it gradually in April as growth begins.