When can I plant Scallions in Zone 1a

One of the best tools that we have as gardeners to help us figure out our gardening schedule is the 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.

A common way of making a decision about when it's the best time to plant scallions is to use the USDA zone info for Zone 1a.


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.

You can plant scallions a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

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 1a is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant scallions and expect a good harvest is probably July. Any later than that and your scallions may not have a chance to grow to maturity. If you are starting your scallions indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on June 15 in Zone 1a. We can expect an average low temperature of -60°F in the coldest months of winter.

Remember that USDA zone info for Zone 1a is not always accurate and our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 1a it frosts late in the year after June 15 so make sure that you are ready to cover your scallions in the event of one of those late frosts.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in our other planting guides for Zone 1a.