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

The first opportunity to plant squash in Portola Valley should be figured out by referring to the USDA zone info.

Planting Calendar for Squash

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

Since squash require warm weather it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant squash in Portola Valley is February. However, you really should wait until March 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. If you wait any later than that and your squash may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your squash indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Portola Valley. You should expect an average low temperature of 30°F in the coldest months of winter.

Keep in mind that USDA zone info for Portola Valley is an average and the actual date of last frost changes from year to year. Since half of the time in Portola Valley last frost occurs after January 31 be ready to protect your squash in the event of a late frost.

USDA Zone Info for Portola Valley

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Portola Valley

You may be interested in your other planting guides for Portola Valley.