The USDA Zone info is a great tool for gardeners to help us estimate 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.

The first opportunity to plant veronica in Walnut Creek should be estimated by referring to the USDA zone info.

Planting Calendar for Veronica

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

Veronica are moderately cold tolerant which means that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant veronica in Walnut Creek 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. Any later than that and your veronica may not have a chance to really do well. If you are starting your veronica indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Walnut Creek the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Walnut Creek and it changes from year to year. Since half of the time in Walnut Creek there is a last frost after February 15 be ready to protect your veronica in the event of a surprise late frost.

USDA Zone Info for Walnut Creek

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 Walnut Creek

You may be interested in your other planting guides for Walnut Creek.