When can I plant Scallions in Zone 4a

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

In Zone 4a you can figure out when you can plant scallions by looking at the USDA zone info.


Planting Calendar for Scallions

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

Since scallions do ok in moderate cold you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant scallions 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 scallions and expect a good harvest is probably August. If you wait any later than that and your scallions may not have a chance to fully mature. If you are starting your scallions indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Zone 4a is just an average and our actual date of last frost will vary from year to year. Since half of the time in Zone 4a last frost occurs after May 15 be ready to protect your scallions in the event of a 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 our other planting guides for Zone 4a.