The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Spring Hill you can figure out when it's a good idea to plant calliopsis by looking at the USDA zone info.

Planting Calendar for Calliopsis

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

It's probably not a good idea to plant calliopsis until after the last frost because they are not cold tolerant.

The earliest that you can plant calliopsis in Spring Hill 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. You probably don't want to wait any later than that or else your calliopsis may not have a chance to fully mature. You can get started a few weeks earlier by starting your calliopsis indoors.

Last Frost Date

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

Since the USDA zone info for Spring Hill is just an average the actual date of last frost is different every year. Half of the time in Spring Hill there is a last frost after April 15 so always be ready to protect your calliopsis if you have one of those late frosts.

USDA Zone Info for Spring Hill

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 Spring Hill

You may be interested in your other planting guides for Spring Hill.