Celeriacs in Banbhaidh
Apium graveolens var. rapaceum
A slow-growing root crop for deep, fertile, moisture-retentive soil. In the UK, sow directly outdoors in spring, keep plants evenly watered, and leave the roots in the ground for later lifting through winter where the soil stays workable.
Growing Guide
Step-by-step instructions for growing Celeriac
Planting Calendar
Prepare the Bed
19 May – 16 JunWork the soil deeply and break it down to a fine tilth around 19th May - 16th June. Remove stones and any hard lumps, then mix in well-rotted compost. Avoid fresh manure, because it makes the roots fork.
Sow Seeds
2 Jun – 16 JunSow seeds thinly in shallow drills around 2nd June - 16th June, then cover lightly and water the row well. Keep the soil moist while they germinate, and sow only when it has warmed enough for steady growth.
Protect from Root Fly
16 Jun – 16 JunFit insect-proof mesh over the row straight after sowing, from 16th June. Seal the edges well so adult flies cannot get in and lay eggs near the roots.
Thin Seedlings
30 Jun – 7 JulWhen seedlings are large enough to handle, from 30th June to 7th July, thin them carefully to one plant every . Water the row first so you disturb the roots as little as possible.
Harvest Roots
2 Jul – 8 DecLift roots from 2nd July and keep harvesting through 8th December. Leave sound roots in the ground over winter if the soil drains well, then lift them as needed before they start to run down.
Companion Plants
Tap a plant to see why it works (or doesn't) with Celeriac.
Good companions
Plants to avoid
Why companion planting matters
Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.
Suggested Varieties
Popular varieties of Celeriac to consider
Monarch
A reliable selection with smooth, round roots and good standing power in the ground.
Asterix
Produces firm roots with a neat shape and steady performance in the vegetable patch.
Giant Prague
A long-established type that gives large, usable roots and is widely grown in Britain.
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