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I really should've got started on winter planting sooner, I think. Everything in the garden is in a lull right now. Although people near me are still blogging about the last of their crops from summer, all we have still going are some chillis and some basil. Lots of things …
Last edited by shiny on November 10, 2026. View history
Celeriac
Also known as
turnip-rooted celery (en)
knob celery (en)
celery root (en)
How to sow celeriac: Seed indoors, then transplant outside into soil
Sun requirement for celeriac: Plant in Full Sun
Celeriac is a large root that develops at soil level and looks like a textured turnip. It is topped with curly leaves. Celeriac root has a flavor similar to celery (they are in the same family) and is delicious in soups, stews, and casseroles. Because it is a root vegetable, it can be stored for months.
- 4
- plantings
- 0
- harvests
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- seed packets
Celeriac facts
Lifespan
Annual
living and reproducing in a single year or less
Height × spread
50cm × 60cmRow Spacing
20cm
Optimal temperature
15–25 °C
Absolute temperature
7–26 °C
FAO EcoCrop
Optimal rainfall
1000–1200 mm/year
Absolute rainfall
700–1700 mm/year
FAO EcoCrop
Optimal soil pH
6–6.8
Absolute soil pH
5.3–8.3
FAO EcoCrop
Crop cycle
80–270 days
FAO EcoCrop
Optimal light
very bright to cloudy skies
FAO EcoCrop
What are growing degree days?
A plant grows with warmth, not with days. A growing degree day is one day's worth of useful warmth: how many degrees the day's average temperature is above the lowest temperature the crop grows at. Add them up from planting and you know how far along the crop is, whatever the calendar says.
Say that lowest temperature is 10°C. A day averaging 17°C gives 7 growing degree days. A day averaging 8°C gives none, as it is too cold for the crop to grow. That is why the same lettuce takes about 50 days in a summer and 90 in an autumn: it needs the same total warmth either way.
For celeriac, the FAO EcoCrop database gives a lowest growing temperature of 7°C and a shortest growing cycle of 80 days at its best temperature, about 1040 growing degree days to a first harvest.
Where you've told us where your garden is, we use this and the weather there to predict when your celeriac will be ready to harvest. We don't use it for how long a plant lives or when it finishes: we go by what members have logged for that.
How members grow celeriac
Sunniness
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Planted from
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Photos
Celeriac crops
Celeriac plantings
Where celeriac grow
Only plantings by members who have set their locations are shown.
What people are saying about celeriac
basils
zucchini
chives
pumpkins
Who's planted celeriac
- lauravalentine seed starting rig
- mrsbrown Front yard · Melbourne, Australia
- Skud Thornbury mini-greenhouses · Ballarat, Victoria,...
Celeriac harvests
Nobody has harvested this crop yet.
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Time to harvest
If sown now, expect a first harvest in about 80 to 270 days.
From the growing cycle in the FAO EcoCrop database, which is the same wherever it is grown.
Ecological requirements
Data from the FAO EcoCrop database for Apium graveolens var. rapaceum L., (Miller) Gaudin
| Family / Taxonomy | Magnoliopsida Rosidae Apiales Umbelliferae |
|---|---|
| Killing temperature | growth: -5 °C, rest: -5 °C |
| Life form | herb |
| Life span | annual, biennial |
| Habit | prostrate/procumbent/semi-erect, acaulescent (or rosette plants) |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium, organic |
| Optimal soil fertility | high |
| Optimal soil drainage | well (dry spells) |
| Optimal soil salinity | low (<4 dS/m) |
| Photoperiod | short day (<12 hours), neutral day (12-14 hours), long day (>14 hours) |
Learn more about celeriac
Resources outside Growstuff.
