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.

In Walnut Creek you can estimate when it's possible to plant purple bell vines by checking out the USDA zone info.

Planting Calendar for Purple Bell Vines

Frost tolerance for purple bell vines:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant purple bell vines slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant purple bell vines in Walnut Creek 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 purple bell vines and expect a good harvest is probably September. You probably don't want to wait any later than that or else your purple bell vines may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your purple bell vines indoors.

Last Frost Date

On average the last frost is on February 15 in Walnut Creek. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Walnut Creek is just an average and the actual date of last frost changes from year to year. Half of the time in Walnut Creek last frost occurs after February 15 so make sure that you are ready to protect your purple bell vines in the event of one of those late frosts.

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.