Green Sleeves

Celery

Zone 10a Save Garden

🌱 90d to harvest Upright

Fragrant and crisp from the first bite, Green Sleeves forms tall, tightly ribbed stalks with a clean, cool green color and a refr…

Crop Dates

Milestone	Date
Start Indoors	Oct 24th
Last Frost	Jan 16th
Transplant / Sow Outdoors	Feb 27th
Harvest Begins	May 28th
Harvest Ends	Dec 19th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Part Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	6

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Frequently Asked Questions

What pest or disease commonly affects sweet celery (Apium graveolens var. dulce), and how can I control it?

Watch for celery leaf spot and early blight-like foliage spots, which show up as dark lesions on leaves that spread during humid weather. Remove infected leaves early, improve airflow by thinning plants, and avoid wetting the foliage when you water. If issues persist, use an approved copper-based fungicide label specifically for celery/leaf spot and reapply according to label directions.

How often should I water sweet celery during the main growing phase?

Keep the soil consistently evenly moist from transplanting through active leaf growth—celery (Apium graveolens) depends on steady moisture to form crisp stems. Water deeply about 2–3 times per week depending on heat and rainfall, aiming for soil that stays damp 1–2 inches down without pooling. Mulch around plants to reduce drying, and avoid letting the soil swing from dry to soggy, which can worsen bitterness and tip/stem issues.

How do I tell when green/sweet celery is ready to harvest?

Harvest when plants are about 8–10 inches tall with thick, crisp ribs and a firm “snap” when you gently bend a stalk. For Apium graveolens var. dulce, start checking around 90 days from sowing/transplanting—use the days-to-maturity as a guideline, but base harvest on stem firmness rather than only the calendar. Cut individual stalks from the outside inward, or harvest the whole plant when the center stalks are similarly thick and well-developed.

Fragrant and crisp from the first bite, Green Sleeves forms tall, tightly ribbed stalks with a clean, cool green color and a refreshing snap. Expect a smooth, tender texture with a classic celery bite—ideal for brightening salads, elevating soups and stews, and lending depth to sauces. Grow it for dependable, uniform performance and a harvest that feels as crisp as it looks.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 35°F before moving outdoors. Harden off for 6 days first.

Expert Note

Start seedlings in a cool indoor window (they dislike heat early), then transplant only after nights are consistently mild and keep soil evenly moist for crisp, sweet stalks.