The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Simi Valley can be used to figure out 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 the last frost.

Squash require warm weather which tells us that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant squash in Simi Valley 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 really do well. If you are starting your squash indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Simi Valley. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Simi Valley is just an average the actual date of last frost is different every year. Half of the time in Simi Valley there is a last frost after February 15 so make sure that you are ready to cover your squash if you have a late frost.

USDA Zone Info for Simi Valley

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 Simi Valley

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