Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. 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 Clayton should be looked at to estimate when to plant calliopsis.

Planting Calendar for Calliopsis

Frost tolerance for calliopsis:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You should not plant calliopsis until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant calliopsis in Clayton 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 calliopsis and expect a good harvest is probably August. Any later than that and your calliopsis may not have a chance to really do well. Starting your calliopsis indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Clayton. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Clayton is just an average the actual date of last frost is different every year. Since half of the time in Clayton you get surprised by a frost after April 15 be ready to protect your calliopsis in the event of a late frost.

USDA Zone Info for Clayton

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Clayton

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