One of the best tools that you have as gardeners to help us determine 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 determining when you can plant stoneseed is to use the USDA zone info for Walnut Creek.

Planting Calendar for Stoneseed

Frost tolerance for stoneseed:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You really shouldn't plant stoneseed until after the last frost has passed because they require warm weather.

The earliest that you can plant stoneseed in Walnut Creek is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant stoneseed and expect a good harvest is probably September. You probably don't want to wait any later than that or else your stoneseed may not have a chance to fully mature. You can get started a little bit earlier by starting your stoneseed indoors.

Last Frost Date

The average date of last frost is February 15 in Walnut Creek. 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 may not be accurate from year to year because it is based on the USDA zone info for Walnut Creek and it will vary from year to year. Since half of the time in Walnut Creek it frosts late in the year after February 15 be ready to cover your stoneseed 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.