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.

One way of making a decision about when it's a good idea to plant asparagus peas is to check out the USDA zone info for Portola Valley.

Planting Calendar for Asparagus peas

Frost tolerance for asparagus peas:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant asparagus peas a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant asparagus peas in Portola Valley is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant asparagus peas and expect a good harvest is probably October. You probably don't want to wait any later than that or else your asparagus peas may not have a chance to fully mature. Starting your asparagus peas indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Portola Valley the average date of last frost happens on January 31. You can expect an average low temperature of 30°F in the coldest months of winter.

Remember 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 cover your asparagus peas 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.