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When to Plant Spinach in International Falls, MN

One of the best tools that you have as gardeners to help us determine your 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 your area.

It's a good idea to estimate when it's a good idea to plant spinach by using the USDA zone info for International Falls.


Planting Calendar for Spinach

Frost tolerance for spinach: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Spinach tend to make it in moderate cold which tells us that you can plant them a little bit earlier in the year than other frost tender plants.

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

The earliest that you can plant spinach 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 spinach and expect a good harvest is probably August. You probably don't want to wait any later than that or else your spinach may not have a chance to grow to maturity. Starting your spinach indoors is a great way to get them started a little bit earlier.

Last Frost Date

In International Falls the average date of last frost happens on May 15. It might get as low as -40°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for International Falls and it can change quite a bit from year to year. Half of the time in International Falls you get surprised by a frost after May 15 so be sure to be ready to protect your spinach if you have a surprise late frost.

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.