in , ,

How to Plant, Grow, and Harvest Celeriac

Celeriac also called celery root
Grow celeriac

Celeriac is a cool-season biennial grown as an annual. It is similar in growth habit and requirements as celery. Celeriac is best when it comes to harvest in cool weather. It is best started indoors and later transplanted into the garden. Sow seed indoors as early as 10 weeks before the average last frost date in spring. Celeriac requires 90 to 120 days to reach harvest.

Description. Celeriac is grown for its large, swollen root that looks something like a turnip. The root develops at soil level similar to a turnip but celeriac is a member of the celery family and has a similar growth habit. From the root, a rosette of dark green leaves sprout atop hollow stems. Celeriac is sometimes called celery root.

Yield. Grow 2 to 3 celeriac plants per household member.

celeriac growing in row
Celeriac (also called celery root) grows best in cool weather, especially where nights are cool.

Planting Celeriac

Site. Celeriac grows best in full sun but will tolerate light shade. Plant celeriac in moisture-retentive but well-drained soil rich in organic matter. Add aged compost to planting beds before plants and again at midseason. Celeriac is a heavy feeder; give plants a side dressing of compost tea every 2 to 3 weeks during the growing season.

Planting time. Celeriac grows best in cool weather, especially where nights are cool. Grow celeriac in spring in cold-winter regions; in warm-winter regions grow celeriac beginning in late summer so that it matures in cool weather. Celeriac is slow to germinate and is best grown from transplants. Sow seed indoors as early as 10 weeks before the average last frost date in spring. Plants can go into the garden on the average date of the last frost. Celeriac requires up to 120 days to reach harvest. A late summer crop can be sown directly in the garden where there is enough time for a second harvest.

Planting and spacing. Sow celeriac seed ⅛ inch deep. Place a seed cloth or burlap over the seeding area to keep the soil moist until plants sprout. When plants are 3 to 4 inches (7.6-10cm) tall thin them from 6 to 8 inches (15-20cm) apart or transplant them into the garden at that distance. Space rows 24 to 30 inches (61-76cm) apart. Celeriac is often set into the garden in 3- to 4-inch (7.6-10cm) deep trenches, similar to celery. As the plants grow, soil can be mounded around the exposed root.

Companion plants. Lettuce, spinach, English peas. Do not plant celeriac with pumpkins, cucumbers, or squash.

Container growing. Celeriac can be grown in a container, but not well. Choose an 8-inch (20cm) container for a single plant.

Celeriac in garden soil
Lack of soil moisture will cause celeriac to stop growing.

Caring for Celeriac

Water and feeding. Celeriac is shallow-rooted and requires regular watering. Lack of soil moisture will cause celeriac to stop growing. Keep the top few inches of soil moist at all times.

Care. Keep celeriac planting beds weed-free to avoid competition for water and nutrients. Cultivate carefully to avoid celeriac’s shallow roots. As the root develops, snip off the side roots and hill up the soil over the swollen bulbous root to blanch it. The outside of the root will blanch white but the flesh will remain a brownish color.

Pests. Celeriac has no serious pest problems.

Diseases. Celeriac has no serious disease problems.

Celeriac sliced
Celeriac will keep in the refrigerator up to one week, or store the root in a cold, moist place for 2 to 3 months.

Harvesting and Storing Celeriac

Harvest. Harvest celeriac when the swollen root is 3 to 4 inches (7.6-10cm) across or slightly larger. Cut stems close to the knobby root; use a garden fork to lift the roots. Celeriac will increase with flavor following a light frost but should be harvested before the first hard freeze. Leaves can be used to flavor soups and stews. From seed, celeriac will reach harvest in 110 to 120 days.

Storing and preserving. Celeriac will keep in the refrigerator up to one week, or store the root in a cold, moist place for 2 to 3 months. Celeriac will keep in the ground where the soil does not freeze. Leaves can be used as an herb in soups and stews.

Celeriac Varieties to Grow

Varieties. ‘Alabaster’ (120 days); ‘Giant Prague’ (120 days).

Common name. Celeriac, turnip-rooted celery, celery root, knob celery

Botanical name. Apium graveolens rapaceum

Origin. Europe and Africa

Grow 80 vegetables: THE KITCHEN GARDEN GROWERS’ GUIDE

Written by Stephen Albert

Stephen Albert is a horticulturist, master gardener, and certified nurseryman who has taught at the University of California for more than 25 years. He holds graduate degrees from the University of California and the University of Iowa. His books include Vegetable Garden Grower’s Guide, Vegetable Garden Almanac & Planner, Tomato Grower’s Answer Book, and Kitchen Garden Grower’s Guide. His Vegetable Garden Grower’s Masterclass is available online. Harvesttotable.com has more than 10 million visitors each year.

Comments

Comments are closed.
  1. I planted 2 75′ long raised beds of strawberries, mulched them nicely and they were blooming like crazy last year giving me hope for a bumper crop of fruit. As soon as some strawberries appeared and got red I harvested a few and waited a few days to check again hoping to get a few bowls full like in the past. But what I saw was shocking – every single berry red or green was gone☹️. I couldn’t believe it!!!
    After investigating we found out that we have one or more turtles living at our farm feasting in our strawberry patch. I also found out that turtles love strawberries.
    Now I am looking for a solution but didn’t come up with one yet. I am open to any suggestions because the whole strawberry season was down the drain.

    • A barrier will keep turtles from entering the strawberry patch. You can use chicken wire and stakes to create a turtle fence. Bury about 12 inches of the chicken wire in a trench so that the turtles do not tunnel under.

Load more comments

How To Grow Tips

How To Grow Tomatoes

How To Grow Peppers

How To Grow Broccoli

How To Grow Carrots

How To Grow Beans

How To Grow Corn

How To Grow Peas

How To Grow Lettuce

How To Grow Cucumbers

How To Grow Zucchini and Summer Squash

How To Grow Onions

How To Grow Potatoes

Biodegradable pots

Seed Starting Vegetables in March

Beans dry red bean pods1

How to Grow Dry Beans