When to Plant Celery in Zone 4a

The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when you can plant celery by referring to the USDA zone info for Zone 4a.

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Planting Calendar for Celery

Frost tolerance for celery: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Celery tend to make it in mild cold which tells us that you can plant them a bit earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant celery
Possibly ok, but a risky time to plant celery
Probably not a good time to plant celery

The earliest that you can plant celery in Zone 4a is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant celery and expect a good harvest is probably August. If you wait any later than that and your celery may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your celery indoors.

Last Frost Date

In Zone 4a the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -30°F.

It's important to remember that USDA zone info for Zone 4a may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Zone 4a you get surprised by a frost after May 15 be ready to protect your celery if you have a surprise late frost.

USDA Zone Info for Zone 4a

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-30°F
Highest Expected Low-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Zone 4a

You may be interested in your other planting guides for Zone 4a.