One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's possible to plant veronica is to look at the USDA zone info for Portola Valley.

Planting Calendar for Veronica

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

You can plant veronica a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant veronica 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 veronica and expect a good harvest is probably October. If you wait any later than that and your veronica may not have a chance to really do well. Starting your veronica indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on January 31 in Portola Valley. It might get as low as 30°F during the coldest months of winter.

Remember that USDA zone info for Portola Valley is an average and the actual date of last frost will vary from year to year. Half of the time in Portola Valley you get surprised by a frost after January 31 so be sure to be ready to cover your veronica 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.