One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

One way of figuring out when you can plant guara is to look at the USDA zone info for Portola Valley.

Planting Calendar for Guara

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

You can not plant guara until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant guara 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 guara and expect a good harvest is probably September. Any later than that and your guara may not have a chance to really do well. If you are starting your guara indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Portola Valley the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Portola Valley is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Portola Valley it frosts late in the year after January 31 so just be sure to be ready to protect your guara if you have one of those late frosts.

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.