How to grow Celeriac in the UK
Apium graveolens rapaceum
Celeriac (Apium graveolens rapaceum) is a vegetable that grows well in UK gardens. Ugly but delicious — celery flavour without the strings. Long season — 30 weeks soil to plate. This guide covers when and how to sow Celeriac, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Celeriac
Sowing and harvest window through the year (UK):
Jan Harvest | Feb Harvest | Mar Sow | Apr | May | Jun Plant | Jul | Aug | Sep | Oct Harvest | Nov Harvest | Dec Harvest |
Soil, position & care
- Soil
- Rich, moisture-retentive soil
- Soil pH
- 6.5–7.0
- Position
- Open, sunny site
- Sowing depth
- Surface (needs light)
- Spacing
- 30 cm apart
- Sowing
- Sow indoors Mar; long season
- Growing
- Keep moist; remove some outer leaves to expose the crown in late summer
- Harvest & upkeep
- Lift autumn–winter; hardy with a mulch
- Watch for
- Slugs, celery fly
Companion planting for Celeriac
No specific companion notes for this plant.
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Celeriac FAQs
When should I sow Celeriac in the UK?
In the UK, sow Celeriac in March. Sowing across these months gives the plant the right soil temperature and day length to establish well.
How much sun does Celeriac need?
Celeriac prefers full sun (6+ hrs direct).
When is Celeriac ready to harvest?
Celeriac is typically ready to harvest in January, February, October, November, December in the UK.
Is Celeriac easy to grow?
Moderate. Ugly but delicious — celery flavour without the strings. Long season — 30 weeks soil to plate.