Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Mandan you should be able to estimate when you can plant squash.

Planting Calendar for Squash

Frost tolerance for squash:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since squash are not cold tolerant it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant squash in Mandan is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant squash and expect a good harvest is probably August. You probably don't want to wait any later than that or else your squash may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your squash indoors.

Last Frost Date

In Mandan the average date of last frost happens on May 15. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Mandan is just an average the actual date of last frost changes from year to year. Since half of the time in Mandan there is a last frost after May 15 be ready to cover your squash if you have one of those late frosts.

USDA Zone Info for Mandan

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Mandan

You may be interested in your other planting guides for Mandan.