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.

The first chance to plant squash in Bozeman should be determined by using the USDA zone info.

Planting Calendar for Squash

Frost tolerance for squash:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Squash do not do well in cold weather which tells us that you must wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant squash in Bozeman 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. If you wait any later than that and 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

The average date of last frost is May 15 in Bozeman. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Bozeman is not always accurate and the actual date of last frost is different every year. Half of the time in Bozeman you get a frost after May 15 so just be sure to be ready to cover your squash in the event of a late frost.

USDA Zone Info for Bozeman

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Bozeman

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