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.

In Walnut you can determine when to plant sutera by referring to the USDA zone info.

Planting Calendar for Sutera

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

Since sutera are one of those plants that can tolerate a tiny bit of cold weather you can plant them just a tiny bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant sutera in Walnut 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 sutera and expect a good harvest is probably September. If you wait any later than that and your sutera may not have a chance to grow to maturity. You can get started a little bit earlier by starting your sutera indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in Walnut. It might get as low as 30°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Walnut is not always accurate and the actual date of last frost changes from year to year. Half of the time in Walnut you get a frost after January 31 so just be sure to be ready to protect your sutera if you have a late frost.

USDA Zone Info for Walnut

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 Walnut

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