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When to Plant Asparagus in International Falls, MN

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for International Falls can be reviewed to figure out when you can plant asparagus.


Planting Calendar for Asparagus

Frost tolerance for asparagus: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

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

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

The earliest that you can plant asparagus in International Falls 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 asparagus and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus may not have a chance to really do well. If you are starting your asparagus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In International Falls the average date of last frost happens on May 15. You should expect an average low temperature of -40°F in the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for International Falls and it is different every year. Since half of the time in International Falls you get a frost after May 15 be ready to cover your asparagus in the event of one of those late frosts.

USDA Zone Info for International Falls

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-40°F
Highest Expected Low-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in International Falls

You may be interested in your other planting guides for International Falls.