Parsnips need early sowing into warm soil and a long season — here's exactly when to sow for the sweetest roots, with regional timing and variety picks.
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Sowing dates and growing advice verified against RHS guidance by the SoilCommander Growing Team.
Parsnip Planting Calendar
| Task | Timing | Notes |
|---|---|---|
| Sow outdoors | February – May | Soil temp min 7°C; use fresh seed every year |
| Germination | 14–21 days | Slow — mark rows with radish to avoid disturbing before germination |
| Harvest | October – March | Sweetest after first frost; leave in ground until needed |
Key Growing Tips
- Always use fresh seed — parsnip seed loses viability after one year; old seed is the most common cause of failure
- Sow directly outdoors only — parsnips cannot be transplanted
- Wait for soil to reach 7°C before sowing; cold, wet soil causes seed to rot
- Leave roots in ground through winter — frost converts starch to sugar, dramatically improving flavour
Top Varieties
- Gladiator F1 — RHS AGM, reliable, smooth-skinned, good canker resistance
- Hollow Crown — heritage variety, long slender roots, excellent flavour
- White Gem — compact and uniform, good for shallow or stony soils
Browse all sowing dates in the UK vegetable planting calendar · Explore all UK vegetable growing guides
Relevant next steps
Plan The Timing Before You Sow
Use the planting window with a planner, seed-starting setup, and the full calendar so dates stay practical for your garden.
Plan the next step
Use the printable UK Vegetable Garden Planner to turn this guide into sowing dates, bed layouts, and weekly garden tasks.