Growing Celery: A Long-Season Crop for Crunchy Stalks

Celery is a long-season crop, often considered the trickiest to grow. It demands fertile soil, cool temperatures, and constant moisture. It won’t tolerate heat and is hard to transplant. Summer crops in the north, winter in the south make it a year-round producer.

Planting Celery

• Always start seeds indoors for best success, 8–10 weeks before average last frost.
• Late summer direct sow possible if temps stay 55–70°F throughout growth.
• Soak seeds in warm water overnight to reduce germination time (National Gardening Association tip).
• Work organic fertilizer or compost into soil before planting.
• Harden off: reduce water slightly, keep outdoors a few hours daily.
• Transplant 10–12 inches apart; direct sow ¼ inch deep, thin to 12 inches at 6 inches tall.
• Mulch and water directly after planting.

Care

• Heavy feeder, needs lots of water. Provide ample water all season, especially in hot, dry weather.
• Insufficient water → dry, small stalks.
• Add compost and mulch to retain moisture.
• Fertilize regularly; add mulch as needed for moisture and nutrients.
• Tie growing stalks together to prevent sprawling.

Pests and Diseases

• Cutworms
• Aphids
• Whiteflies
• Bolting
• Mosaic Virus
• Fusarium Wilt

Harvest and Storage

• Harvest stalks (above ground) from outside in. Start when stalks ~8 inches tall.
• Can keep in garden up to a month if soil built up around it for temperature. Tolerates light frost, not consecutive frosts.
• Darker stalks = more nutrients, tougher texture.
• Refrigerate in plastic bag, use within 2 weeks.

Recommended Varieties

• ‘Utah’: good for limited space, reaches 18 inches.
• ‘Alfina’: slender, dark green, quick (60 days).
• ‘Conquistador’: tolerates higher temps and watering shortage.

Wit & Wisdom

• Ancient Romans believed celery healed headaches.
• Celery is one of the world’s healthiest foods—discover why.