One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to determine when it's the best time to plant garlic by using the USDA zone info for Thief River Falls.

Planting Calendar for Garlic

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

Garlic tend to make it in pretty solid cold which means that you can plant them much earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost has passed is on May 15 in Thief River Falls. You should expect an average low temperature of -35°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 Thief River Falls and it is different every year. Since half of the time in Thief River Falls it frosts late in the year after May 15 be ready to protect your garlic if you have a surprise late frost.

USDA Zone Info for Thief River Falls

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Thief River Falls

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