When to Plant Celery in Maryland

Growing Celery in Maryland: Complete Guide

Celery (Apium graveolens) is a warm-season crop that needs a head start indoors before Maryland's last frost. Most Maryland gardeners begin seeds indoors around Friday, January 9, 2026 and move transplants outside around Friday, April 3, 2026, after the risk of frost has passed.

Because Maryland stretches across 5 USDA hardiness zones (6a, 6b, 7a, 7b, 8a), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 130 days to maturity, Celery needs the indoor head start that Maryland's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Celery requires full sun and regular moisture. Mid-Atlantic summers bring heat and humidity — ensure good air circulation and watch for fungal issues like powdery mildew.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Maryland.