root · direct sow
Turnip: how much to plant.
A family of 4 eating turnip a few times a week needs about 15 plants in ~4 sq ft, worth about $15 a year at the store. Here are the exact numbers for your household, and when to plant in every zone.
How much to plant
Plants, space, seeds, and value.
Counts assume about 3 servings per person per week with a germination buffer built in. Store value uses ~$2.00/lb retail — an estimate that varies by region and season.
| Household | Plants | Bed space | Seeds to buy | Store value / yr |
|---|---|---|---|---|
| 1 person | 4 | ~1 sq ft | ~8 | ~$4 |
| 2 people | 8 | ~2 sq ft | ~15 | ~$8 |
| 4 people | 15 | ~4 sq ft | ~27 | ~$15 |
| 6 people | 22 | ~6 sq ft | ~39 | ~$22 |
Spacing
3" in row · 12" between rows
Sow depth
0.5"
Days to harvest
50 from seed
When to plant
Sow windows by USDA zone, 2026.
Zone dates are typical, not exact. The free planner uses your ZIP code's frost dates, not just the zone, and shifts every window to match.
| Zone | Spring sow window | Fall sow window |
|---|---|---|
| Zone 3 | Apr 7 – May 10 | Jun 20 – Jul 26 |
| Zone 4 | Apr 2 – May 5 | Jun 30 – Aug 5 |
| Zone 5 | Mar 23 – Apr 25 | Jul 10 – Aug 15 |
| Zone 6 | Mar 13 – Apr 15 | Jul 20 – Aug 25 |
| Zone 7 | Feb 26 – Mar 31 | Jul 30 – Sep 4 |
| Zone 8 | Feb 15 – Mar 20 | Aug 20 – Sep 25 |
| Zone 9 | Jan 13 – Feb 15 | Sep 9 – Oct 15 |
| Zone 10 | Jan 1 – Jan 26 | Sep 19 – Oct 25 |
Know before you grow
The practical stuff.
Yield
About 0.5 counts per plant over ~1 productive weeks (~0.5 lb). Re-sow every ~14 days for a steady supply instead of one glut.
Watch for
Cabbage worms & loopers · Aphids · Flea beetles — the pest guide covers organic fixes for each, and Pest Radar shows what gardeners near you are reporting right now.
On the plate (per 100 g, USDA)
28 kcal · 1.8 g fiber · 21 mg vitamin C · 191 mg potassium
Stop guessing. Get your exact numbers.
Tell the free planner what you want to eat and who you're feeding. It returns plant counts, spacing, and frost-safe sow dates for your ZIP code — not just your zone — in about 60 seconds.