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Celery

Vegetable

Apium graveolens

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Celery is one of the most demanding vegetables to grow, requiring consistently moist, rich soil and a long cool growing season. Its pungent aromatic compounds make it a useful companion for repelling pests from neighbouring brassicas.

Celery

Growing Conditions

Sunlight

Full Sun

Water Needs

High

Soil

Rich, moisture-retaining loam; pH 6.0 - 7.0

Spacing

8 - 10 inches

Days to Maturity

100 - 120 days from transplant

Growing Zones

1
2
3
4
5
6
7
8
9
10
11
12
13

Thrives in USDA Zones 3 - 10

When to Plant

  • Start Indoors

    10 - 12 weeks before last frost

  • Transplant

    2 weeks before last frost

  • Harvest

    100 - 120 days from transplant; blanch stems by mounding soil for milder flavour

Phenology (Natural Timing Cues)

Start Indoors

Start celery indoors 10-12 weeks before the last frost date - the longest indoor lead time of any common vegetable. Celery seedlings grow very slowly and need this extended runway to reach transplant size.

  • Deciduous trees are still bare.
  • Forsythia has not reached full bloom.
  • Dandelions are not yet in heavy bloom.

Transplant

Transplant celery into cool, consistently moist conditions. Heat above 80°F and drought can both trigger premature bolting, so cool, even moisture through the first weeks after transplant matters as much as any other factor.

  • Forsythia is blooming.
  • Early dandelions are beginning to bloom.
  • Soil is workable, cool, and evenly moist.
  • Night temperatures stay consistently above 28°F.

Start Dates (Your Location)

Average dates use your saved zone; readiness also checks your forecast when available.

Open Seed Starting Date Calculator

Average Last Frost

Set your growing zone to see personalized calendar dates.

Current ReadinessWeather data unavailable

Use the average timing, but check your local forecast before planting.

Organic Growing Tips

  • Blanch stems by wrapping with cardboard or mounding earth around them 2 - 3 weeks before harvest.

  • Water consistently and deeply - irregular watering causes hollow stalks and bitter flavour.

  • Use compost tea as a foliar feed monthly to support celery's heavy nitrogen demands.

  • Grow under partial shade in hot climates to prevent bolting and maintain tender stalks.

Care Guidance

Optional seasonal guidance for what you can do, even when nothing is urgent.
  • Watering

    During active growth and extended dry periods, this plant often benefits from steadier moisture. If the top inch dries out, a slow deep watering at the base is often enough.

  • Feeding

    If growth is strong, compost-rich soil often carries most of the load. If the plant starts looking pale or stalls, a light compost top-dressing or gentle organic feed may help.

  • Seasonal care

    During the main season, harvesting when the crop is ready and removing damaged growth can help keep the planting productive if it starts to look crowded or tired.

Known Varieties

Common cultivars worth knowing
  • Tango

    Reliable green celery with good flavor and improved tolerance of garden stress.

    Best for

    home gardens

  • Utah 52-70

    Classic tall green celery with crisp stalks.

    Best for

    traditional stalk celery

  • Conquistador

    Earlier variety with better performance under less-than-perfect conditions.

    Best for

    shorter seasons

  • Golden Self-Blanching

    Pale celery type selected for milder blanched stalks.

    Best for

    mild flavor

  • Redventure

    Red-stalked celery with strong color and old-fashioned flavor.

    Best for

    specialty gardens

Companion Planting

Common Pests

All pest management in Garden uses safe, organic, non-toxic methods only. No synthetic pesticides, ever.

Simple Ways to Use

Start here if you're not sure how to use this crop in the kitchen.

Quick recipes you can make right away

  • Celery Snack Sticks

    Trim the stalks, rinse them well, and cut them into 3- to 4-inch sticks, then chill them 10 minutes if they feel a little limp. Eat them once they are crisp and cold, with peanut butter, cream cheese, or plain salt.

  • Celery and Onion Soup Base

    Dice celery and onion and cook them in butter or oil over medium heat for 8 to 10 minutes until the celery turns glossy and the onion softens without browning hard. Use the mixture as soon as the pieces smell sweet and no longer taste raw.

  • Quick Braised Celery

    Cut celery into 2-inch pieces, add a small splash of broth to a skillet, cover, and cook 6 to 8 minutes until the thickest pieces are tender when pierced. Uncover for the last minute so extra liquid cooks away before serving.

How to Preserve

Use this section to store or process extra harvest before it spoils.

Practical methods for extra harvest

  • Freeze chopped celery

    Wash and chop the stalks, spread them on a tray, and freeze until firm before bagging them so you can pour out small amounts later. Use frozen celery in soup, stuffing, or stock, because it loses its raw crunch after thawing.

  • Freeze blanched celery slices

    Slice the stalks and blanch them 2 to 3 minutes, then chill them fully in ice water so they stop cooking and keep better color. Dry them well before freezing, and use them later in cooked dishes only.

  • Make celery stock base

    Simmer chopped celery with onion, carrot, and water for 30 to 45 minutes until the vegetables are very soft and the broth smells rich and savory. Strain, cool quickly, and freeze in jars or containers with headspace so the liquid can expand safely.

How to Store

Simple storage tips

  • Keep celery cold in the refrigerator, ideally in the crisper, where a full head often keeps about 1 to 2 weeks.

  • Wrap celery loosely in foil or a barely damp towel so it holds moisture without trapping enough water to cause slime.

  • Cut stalks lose crispness faster than a whole head, so leave the bunch intact until you need it if possible.

  • If the stalks soften slightly, stand them in cold water for 15 to 30 minutes to restore some crispness before using them raw.

  • Discard celery that feels slimy, smells sour, or shows dark wet rot at the base.

How to Save Seed

Step-by-step seed saving

  1. 1

    If the packet or plant tag says F1 hybrid, saved seeds may grow into celery with different stalk size or flavor. Open-pollinated celery is the better choice if you want seed to stay true.

  2. 2

    Celery usually makes seed in its second year, so saving seed is slower and more advanced than saving seed from annual crops.

  3. 3

    Let selected plants flower and dry down until most seed heads turn tan and the seeds rub loose easily, then cut the stalks before heavy rain if possible.

  4. 4

    Dry the stalks under cover if needed and store the cleaned seed only when it feels fully dry and no green stem pieces remain mixed in.

Native Range

Origin
Celery is derived from wild Apium graveolens, native around Europe, North Africa, and western Asia.
Native Habitat
Wet coastal ground, marshes, ditches, brackish margins, stream edges, and damp disturbed soils.
Current Distribution
Naturalized across many temperate regions, especially in damp disturbed habitats.

Taxonomy

Kingdom
Plantae
Family
Carrot family (Apiaceae)
Genus
Apium
Species
Apium graveolens

Morphology

  • Root System

    Shallow fibrous roots that need constant moisture and rich soil. Plants wilt quickly when the root zone dries out.

  • Stem

    The edible stalks are thick leaf petioles clustered tightly around a central crown, not true stems. Blanching reduces color and strong flavor in some types.

  • Leaves

    Glossy divided leaves with a strong celery scent. Leaf color and vigor show moisture stress quickly.

  • Flowers

    Second-year plants send up branched umbels of small white flowers typical of the carrot family. Bolting makes stalks tough and bitter.

  • Fruit

    Produces tiny aromatic seeds after flowering. The harvested crop is the crisp stalk and leafy top.

Natural History

Celery was domesticated from wild celery (Apium graveolens var. graveolens), a strongly aromatic plant of salty marshes, coastal meadows, and disturbed wet ground native to the Mediterranean and western Asia. The wild form is pungent enough that the Romans used it primarily as a flavoring and medicinal plant rather than a vegetable in the modern sense. In ancient Greek and Roman culture, celery carried a specific association with death and the underworld: wild celery garlands were placed on tombs, and winners of the Nemean and Isthmian Games were crowned with wild celery rather than the laurel used at Olympia. The thick-stalked form grown today was developed in Italian kitchen gardens around the 17th century - a relatively recent domestication compared with most common vegetables. Before that, celery was grown for its leaves (cutting celery) and seeds. The root form, celeriac (Apium graveolens var. rapaceum), was selected separately and became the preferred form in northern and central European cooking, where its winter storage quality suited local food traditions. The seeds, ground with salt, produce celery salt - one of the most distinctive spice blends in European and American cooking.

Traditional Use

Celery's traditional history runs in distinct phases: an ancient phase as a strongly aromatic flavoring, medicinal, and ritual plant; a medieval phase as a leaf herb and seed spice; and a modern phase as a mild stalk vegetable developed in 17th-century Italy. The vegetable most people recognize today represents only the final stage of a long domestication process.

Parts Noted Historically

StalksLeavesSeeds
  • Ancient Greek and Roman Traditions - Leaves and aerial parts

    Wild celery had a funerary association in ancient Greece and Rome: garlands were placed on tombs, and athletes victorious at the Nemean and Isthmian Games received wild celery crowns. The Romans used the strongly aromatic leaves and seeds as flavoring and in preparations noted by Dioscorides and other classical medical writers. This ancient tradition is quite distinct from the mild stalk vegetable developed centuries later.

  • Medieval and Renaissance Leaf Celery Traditions - Leaves and seeds

    Through the medieval period, celery was grown primarily as a cutting herb - the leaf form still called "cutting celery" or "smallage" - used to flavor soups, stews, and broths. The seeds were used as a spice and appeared in herbal preparations. This form of celery was much closer to the aromatic wild plant than to modern stalk celery.

  • Italian Stalk Celery and French Adoption - Stalks

    Thick-stalked celery appears to have been developed in Italian gardens in the 17th century, representing a significant step toward the milder, fleshy form we know today. The Italian tradition of eating raw celery with salt or braised as a vegetable course developed alongside this improved form. French cuisine adopted it enthusiastically in the 18th century, and blanched celery - grown in earthed-up trenches to produce pale, mild stalks - became a refined kitchen garden crop.

  • Celeriac and Northern European Traditions - Root

    Celeriac (Apium graveolens var. rapaceum), selected for its swollen aromatic root, became the preferred celery form in Germany, France, the Netherlands, and Scandinavia, where its winter storage quality and strong flavor suited regional cooking. French rémoulade de céleri-rave - raw celeriac dressed with mustardy mayonnaise - is one of its most enduring preparations and remains a standard French bistro dish.

Celery is one of the 14 major allergens recognized in EU food labeling law and can cause severe reactions in affected individuals. Both raw and cooked celery can trigger responses. Celery seeds contain higher concentrations of the relevant compounds than stalks and should be treated with particular caution by those with suspected sensitivity.

This information is provided for historical and educational purposes only and is not medical advice. Always consult a qualified healthcare professional before making decisions related to your health.

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