When to Plant Celery in Massachusetts
Start Seeds Indoors
Friday, January 30, 2026
Transplant outdoors: Friday, April 24, 2026
State
Massachusetts
USDA Zones
6a, 6b, 7a
Avg Last Frost
Friday, April 10, 2026
Cities Covered
27
Massachusetts Planting Schedule by Zone
Massachusetts spans 3 zones — find yours below for the most accurate dates.
| Zone | Last Frost | Start Indoors | Transplant |
|---|---|---|---|
| 6a | Monday, April 20, 2026 | Monday, February 9, 2026 | Monday, May 4, 2026 |
| 6b | Wednesday, April 15, 2026 | Wednesday, February 4, 2026 | Wednesday, April 29, 2026 |
| 7a | Friday, April 10, 2026 | Friday, January 30, 2026 | Friday, April 24, 2026 |
Dates based on average last frost. Check your local forecast before planting.
🌿 About Celery
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Growing Celery in Massachusetts: Complete Guide
Celery (Apium graveolens) is a warm-season crop that needs a head start indoors before Massachusetts's last frost. Most Massachusetts gardeners begin seeds indoors around Friday, January 30, 2026 and move transplants outside around Friday, April 24, 2026, after the risk of frost has passed.
Because Massachusetts stretches across 3 USDA hardiness zones (6a, 6b, 7a), planting windows can shift by as much as two to four 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 Massachusetts'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. Most of Massachusetts receives adequate sunlight during the growing season, though gardeners in humid eastern regions should watch for fungal issues and ensure good air circulation.
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 Massachusetts.
Frequently Asked Questions
When should I plant Celery in Massachusetts?
In Massachusetts, start Celery seeds indoors around Friday, January 30, 2026 and transplant outdoors around Friday, April 24, 2026 after your last frost. Massachusetts spans zones 6a–7a, so dates shift by 1–4 weeks depending on where you live.
What is the last frost date in Massachusetts?
Massachusetts spans 3 USDA zones (6a, 6b, 7a), so last frost dates vary by region. Andover (6a) sees frost until around Monday, April 20, 2026, while Boston, Charlestown, Cambridge (7a) is frost-free much earlier.
How long does Celery take to grow in Massachusetts?
Celery takes about 130 days from transplant (or direct sow) to harvest. Starting seeds indoors in Massachusetts gives you a head start so plants are ready to go out after the last frost.
What USDA zones does Massachusetts cover for Celery?
Massachusetts includes zones 6a, 6b, 7a. Celery grows well across all of these zones with adjusted timing — use the zone table above to find the right dates for your part of the state.
Find Precise Dates for Your City
Select a city for exact planting dates based on local frost records.