Turnips are one of the most underrated vegetables in the home garden — fast, productive, cold-hardy, and dual-purpose. Both the root and the leafy tops are edible: the roots have a mild, slightly peppery flavor excellent roasted, mashed, or in soups, while the greens (turnip tops) are a nutritious cooking green with a flavor similar to mustard greens. The entire plant is useful, and its 30–60 day growing time makes it one of the fastest large-root vegetables.
Turnips are a cool-season crop that actually improves in flavor after frost — cold temperatures convert root starches to sugars, producing sweeter, milder roots than those harvested in warm weather. This makes the fall season particularly rewarding for turnip growers. They're also an excellent choice for succession planting and for using the tail ends of the growing season in spring and fall when few other crops perform as well.
Turnips' fast maturity (35–60 days) makes them ideal for succession planting in beds that open up after summer crops finish — sow in August where beans or cucumbers were growing for a reliable fall harvest. As brassicas, rotate away from cabbage, broccoli, and kale on a 3-year cycle. The planner helps you identify these sequential planting opportunities so beds stay productive through fall.
Direct-sow turnips in early spring 4–6 weeks before your last frost date, or in late summer 6–10 weeks before your first fall frost. The fall window is often more rewarding — natural cooling temperatures and frost exposure sweeten the roots. In mild climates (Zones 7–10), fall and winter are the primary seasons. Turnips are one of the most frost-tolerant root vegetables, surviving temperatures down to 25°F.
Bitter, pithy turnips result from harvesting too late (roots over 3 inches become dense and strong-flavored), growing in summer heat (warm-season roots are consistently more bitter and pithy), or inconsistent watering (causes internal drying and pithiness). Harvest at 2–3 inches diameter for the best quality. Fall-grown turnips are consistently milder and sweeter than spring or summer roots.
Yes — turnip greens are highly edible and nutritious, rich in vitamins A, C, and K. Young inner leaves are mild enough for salads; mature outer leaves are best cooked. Sauté with olive oil and garlic until wilted (5–7 minutes), or braise with smoked pork and onions in the traditional Southern style. The greens have a pleasant peppery mustard flavor that complements the mild, slightly sweet roots.
Freshly harvested turnips last 2–4 weeks in the refrigerator in a plastic bag. Roots with greens attached last only 1 week — remove the greens before storage and store separately. For longer storage (2–3 months), store in a root cellar or cool basement at 32–40°F with high humidity. Alternatively, leave roots in the ground through winter with straw mulch protection for fresh harvest on demand.
No — turnips and radishes are both root vegetables in the brassica family, but different genera. Radishes (Raphanus) mature in 25–30 days, are much smaller, and are typically eaten raw. Turnips (Brassica rapa) take 35–60 days, grow 2–6 inches in diameter, have white/purple skin, and are usually cooked (though small young turnips are excellent raw). They have similar flavor profiles (peppery, sweet) but very different sizes, culinary uses, and growing seasons.