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Vegetable (Cool Season) - Parsley Family
Also known as root celery, knob celery
Apium graveolens var. Rapaceum
Umbelliferae Family
Celeriac is closely related to celery, but easier to grow. It is prized
for its crisp, celery-flavored root, which you can eat raw or cooked. A
staple in Europe, it is little known in North America.
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Site Characteristics
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Sunlight:
Prefers full sun.
Soil conditions:
Like celery, celeriac prefers rich soil, high in organic matter with pH
6.0 to 7.0, and plentiful, consistent moisture. But it will tolerate
less-than-ideal conditions.
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Plant Traits
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Lifecycle:
annual
Biennial grown as an annual.
Ease-of-care:
moderately difficult
Foliage color:
Foliage texture:
medium
Shape:
- cushion, mound or clump
- upright
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Special Considerations
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Tolerates:
-
frost - More frost-tolerant than celery.
Special characteristics:
- not native to North America
- Mediterranean origin.
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Growing Information
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How to plant:
Propagate by
seed
Germination temperature: 70 F to 75 F
- Optimum when starting indoors.
Days to emergence: 14 to 21
Maintenance and care:
Grow celeriac similar to celery. Start plants inside about 10 to 12
weeks before last frost. Plant several seeds per cell. Seeds need light
to germinate, so don’t cover seed deeply. 50 percent germination is
considered good for this crop.Keep
soil moist and warm (about 70 F to 75 F) until seeds germinate in 2 to
3 weeks. After germination, grow inside in a cool location (about 60 F
to 70 F). Thin to one plant per cell. Set out transplants closely
spaced - just 6 to 8 inches apart, about 2 weeks before average last
frost. Plants can withstand light to moderate frosts. Mulch or hill soil over root shoulders to keep them covered. In Zone 7 and warmer, can be planted in summer for winter and spring harvest.
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