The USDA Zone info is a great tool for gardeners to help us figure out 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.

A common way of figuring out when it's the best time to plant squash is to look at the USDA zone info for Yorkville.

Planting Calendar for Squash

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

You can not plant squash until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant squash in Yorkville 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 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

On average the last frost is on April 15 in Yorkville. You can expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Yorkville may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Yorkville there is a last frost after April 15 so make sure that you are prepared to cover your squash if you have a surprise late frost.

USDA Zone Info for Yorkville

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Yorkville

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