One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

A way of making a decision about when it's possible to plant squash is to examine the USDA zone info for Kennewick.

Planting Calendar for Squash

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

It's not a good idea to 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 Kennewick 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. 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 few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Kennewick. In the coldest months of winter you can expect an average low temperature of 0°F.

Always keep in mind that USDA zone info for Kennewick may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Kennewick last frost occurs after April 15 be ready to cover your squash in the event of a surprise late frost.

USDA Zone Info for Kennewick

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Kennewick

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