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

The best time to plant squash in Rio Vista can be figured out by reviewing the USDA zone info.

Planting Calendar for Squash

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

You should not plant squash until after the last frost because they require warm weather.

The earliest that you can plant squash in Rio Vista is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant squash and expect a good harvest is probably September. 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

In Rio Vista the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Rio Vista is not always accurate the actual date of last frost is different every year. Half of the time in Rio Vista you get a frost after February 15 so make sure that you are ready to protect your squash in the event of a late frost.

USDA Zone Info for Rio Vista

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Rio Vista

You may be interested in your other planting guides for Rio Vista.