The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In International Falls you can estimate when it's possible to plant purslane by reviewing the USDA zone info.

Planting Calendar for Purslane

Frost tolerance for purslane:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Purslane do ok in mild cold which means that you can plant them slightly earlier in the year than other plants that might not handle the cold.

The earliest that you can plant purslane in International Falls is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant purslane and expect a good harvest is probably August. Any later than that and your purslane may not have a chance to really do well. You can get started a little bit earlier by starting your purslane indoors.

Last Frost Date

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

It's important to remember that USDA zone info for International Falls is just an average and the actual date of last frost is different every year. Half of the time in International Falls it frosts late in the year after May 15 so always be ready to protect your purslane in the event of a 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.