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Turnips usually take 30 to 60 days to grow from seed to harvest, depending on the variety, weather, and growing conditions. Here’s what that means in practical terms based on my experience working with home gardeners in different U.S. climates:
Quick Turnip Growth Timeline
| Growth Stage | Approx. Time | What’s Happening |
| Germination | 4–7 days | Seeds sprout quickly in soil temps around 60–70°F. |
| Leaf Growth | 1–3 weeks | Plants develop leafy tops; good light and moisture are essential. |
| Root Formation | 3–6 weeks | Bulbs begin to swell; consistent watering matters most here. |
| Harvest-Ready | 30–60 days | Young turnips (golf-ball size) are sweetest; larger roots can get woody. |
Practical Tips from Real Gardens
- For tender, mild roots: Harvest around 35–40 days after sowing.
- For larger storage turnips: Wait 50–60 days, but watch textureolder roots can toughen.
- In cool U.S. climates: They grow best in spring or fall, when daytime temps stay between 45–75°F.
- In warmer regions: Start seeds in late summer for a fall harvest; heat can cause bitterness and bolting.
Bonus Tip
If you’re growing organically, make sure the soil is loose, well-drained, and rich in compost. Avoid fresh manure right before planting because it can cause misshapen roots.