Celeriac has a delicious, mild celery-like flavor with a hint of nuttiness and can be used raw or cooked. This vegetable is fairly easy to grow (just be sure to keep it watered), but it does require a long growing season of 110 to 130 days after transplanting, so plan ahead.
Common name: Celeriac, celery root or knob celery
Botanical name: Apium graveolens var. rapaceum
Plant type: Vegetable
Height: 18 to 24 inches
- Sun: Full sun
- Soil: Loam or sandy loam with high organic matter is ideal.
- Moisture: Evenly moist; keep plants watered through the growing season for the best quality celeriac
- Mulch: 1 to 2 inches of straw, loose compost or other organic mulch
- Pruning: None
- Fertilizer: Dig in compost or balanced fertilizer before planting; then fertilize monthly with diluted soluble fertilizer or compost tea.
Pests and diseases
- No major problems
- ‘Giant Prague’ (also known as ‘Large Smooth Prague’), ‘Diamant’ and ‘Brilliant’ are popular varieties.
- Celeriac is slow to germinate and grow, so start seeds indoors 8 to 10 weeks before the average last frost in your area, or look for established seedlings at your local garden center.
- Celeriac tolerates light frosts, but harvest before serious freezing temperatures set in.
- Trimmed celeriac keeps extremely well in the refrigerator, often up to 3 or 4 months.
All in the family
- Celeriac is a member of the carrot family (Apiaceae), which is sometimes still listed under its old name, Umbelliferae.
- Other common garden vegetables and herbs in the carrot family include carrots, parsnips, celery, fennel, dill, parsley and cilantro.
- The caterpillars of black swallowtail butterflies are partial to feeding on carrot family members (dill seems especially popular), so be sure to plant extra in the garden.
Where to buy