root · transplant
Celeriac: how much to plant.
A family of 4 eating celeriac a few times a week needs about 6 plants in ~9 sq ft, worth about $9 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 | 2 | ~3 sq ft | ~3 | ~$3 |
| 2 people | 3 | ~5 sq ft | ~5 | ~$5 |
| 4 people | 6 | ~9 sq ft | ~9 | ~$9 |
| 6 people | 9 | ~14 sq ft | ~13 | ~$14 |
Spacing
12" in row · 18" between rows
Sow depth
0.125"
Days to harvest
80 from transplant (110 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 | Feb 6 – Mar 20 | Jun 9 – Jul 14 |
| Zone 4 | Feb 1 – Mar 15 | Jun 19 – Jul 24 |
| Zone 5 | Jan 22 – Mar 5 | Jun 29 – Aug 3 |
| Zone 6 | Jan 12 – Feb 23 | Jul 9 – Aug 13 |
| Zone 7 | Jan 1 – Feb 8 | Jul 19 – Aug 23 |
| Zone 8 | Jan 1 – Jan 28 | Aug 9 – Sep 13 |
| Zone 9 | Jan 1 – Jan 1 | Aug 29 – Oct 3 |
| Zone 10 | Jan 1 – Jan 1 | Sep 8 – Oct 13 |
Know before you grow
The practical stuff.
Yield
About 0.75 lbs per plant over ~1 productive weeks (~0.75 lb).
Watch for
Carrot rust fly · Parsleyworm · Aphids — the pest guide covers organic fixes for each, and Pest Radar shows what gardeners near you are reporting right now.
Neighbors
Plays well with leek, onion-bulb, beet, spinach. Keep away from parsnip.
On the plate (per 100 g, USDA)
42 kcal · 1.8 g fiber · 8 mg vitamin C · 300 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.