When can I plant Scallions in Zone 5a

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The first chance to plant scallions in Zone 5a should be figured out by referring to 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 a bit earlier in the year than more sensitive plants.

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 5a is March. However, you really should wait until April 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. Any later than that and your scallions may not have a chance to grow to maturity. Starting your scallions indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Zone 5a. In the coldest months of winter we should expect an average low temperature of -20°F.

Keep in mind that our actual date of last frost is an average because it is based on the USDA zone info for Zone 5a and it will vary from year to year. Half of the time in Zone 5a we get surprised by a frost after April 15 so be sure to be ready to protect your scallions in the event of one of those late frosts.

USDA Zone Info for Zone 5a

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Zone 5a

You may be interested in our other planting guides for Zone 5a.