Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Holmen you should be able to determine when it's the best time to plant squash.

Planting Calendar for Squash

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

You can not plant squash until after the last frost because they are not cold tolerant.

The earliest that you can plant squash in Holmen 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. Any later than that and your squash may not have a chance to fully mature. Starting your squash indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Holmen. You should expect an average low temperature of -25°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Holmen is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Holmen it frosts late in the year after May 15 so make sure that you are ready to protect your squash in the event of a surprise late frost.

USDA Zone Info for Holmen

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 Holmen

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