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Celery

Apium graveolens · Apiaceae

The gardener's calendar

The right move for September

Ideal time to plant celery: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous
Flowering
Summer (July-September)
Adult size
0.60–1 m tall
Growth
Fast to moderate
Hardiness
Tender (freezes below −5 °C)
Origin
Mediterranean basin and Southern Europe
Soil type
Fertile, moist and well-draining

Care

Regular watering

Celery demands constant and generous watering: the soil should never dry out between waterings. During hot periods, water every 2–3 days to maintain consistent moisture. Mulching at the base helps retain moisture and limits evaporation.

Sunny exposure

Plant celery in full sun (minimum 6 to 8 hours) to encourage growth and foliage development. Partial shade also works well in very hot climates. Avoid areas exposed to strong winds.

Rich and moist soil

Work the soil deeply before planting and incorporate well-decomposed compost or manure. Celery prefers slightly alkaline to neutral soils. Ensure good drainage to prevent root rot despite its moisture requirements.

Moderate fertilizing

Apply balanced fertilizer 3 to 4 weeks after planting. For continuous growth, a monthly application of low-nitrogen fertilizer is sufficient. Avoid excess feeding, which would promote excessive foliage at the expense of quality.

Cutting and harvesting

Pinch outer stems when they reach a harvestable size to encourage production. Harvest stems progressively by cutting them at the base or pick individual leaves. Regular harvesting stimulates branching.

Disease prevention

Celery can suffer from bacterial rot if too wet. Ensure good drainage and proper air circulation. Watch for aphids or whiteflies; early spraying with soapy water or neem oil controls these pests.

Did you know?

Celery was once considered a magical and medicinal plant in ancient Egypt, where it was used in funeral rituals. The Romans made it into a victory crown for warriors, while in medieval Europe it was credited with aphrodisiac properties that made it highly coveted among the nobility.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.