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 | Dec 28 – Feb 8 | Jul 19 – Aug 23 |
| Zone 8 | Dec 17 – Jan 28 | Aug 9 – Sep 13 |
| Zone 9 | Nov 14 – Dec 26 | Aug 29 – Oct 3 |
| Zone 10 | Oct 25 – Dec 6 | Sep 8 – Oct 13 |
Know when it's time to plant
Give us your ZIP and we'll email you a planting checklist for your exact frost dates, this month's list right now, then once a month when sow windows open.
One email a month, only when there's something to plant. Unsubscribe anytime.
Know before you grow
The practical stuff.
Ready to pick when
The knob is 3 to 4 inches across at the soil line, usually by mid-fall. Frost-hardy, no rush.
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, 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.
Celeriac keeps for months in cool storage. See how much to grow and store to feed your household, and how long it keeps.
Celeriac planting questions
How many celeriac plants do I need per person?+
For steady eating (about 3 servings a week), plan on roughly 2 plants per person. A family of 4 needs about 6 plants, which takes around 9 sq ft of bed space.
How much space does celeriac need?+
Space plants 12" apart in the row with 18" between rows. Sow 0.125" deep. Start indoors, transplant out.
When should I plant celeriac?+
It depends on your frost dates. Spring sowing is keyed to your last spring frost. It also has a fall window keyed to your first fall frost. The zone table on this page shows typical windows; enter your ZIP in the free planner for dates tuned to your exact location, not just your zone.
Is growing celeriac worth it?+
At about $2.00/lb retail and ~0.75 lb per plant, a family-of-4 planting is worth about $9 a year at the store. Prices vary by region and season, so treat it as an estimate.