One of the best tools that you have as gardeners to help us estimate 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.

The USDA zone info for Stone Mountain can be reviewed to estimate when to plant cuphea.

Planting Calendar for Cuphea

Frost tolerance for cuphea:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since cuphea do not do well in cold weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant cuphea in Stone Mountain is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant cuphea and expect a good harvest is probably August. Any later than that and your cuphea may not have a chance to fully mature. If you are starting your cuphea indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Stone Mountain. You can expect an average low temperature of 5°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Stone Mountain and it will vary from year to year. Half of the time in Stone Mountain you get a frost after April 15 so make sure that you are ready to cover your cuphea in the event of a surprise late frost.

USDA Zone Info for Stone Mountain

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Stone Mountain

You may be interested in your other planting guides for Stone Mountain.