The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant cuphea in Walnut should be determined by referring to the USDA zone info.

Planting Calendar for Cuphea

Frost tolerance for cuphea:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant cuphea until after the last frost because they are not cold tolerant.

The earliest that you can plant cuphea 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 cuphea and expect a good harvest is probably September. If you wait any later than that and your cuphea may not have a chance to fully mature. Starting your cuphea indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Walnut. In the coldest months of winter you should expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for Walnut is an average and the actual date of last frost will vary from year to year. Since half of the time in Walnut there is a last frost after January 31 be ready to protect your cuphea in the event of 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.