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.

One way of estimating when it's possible to plant calliopsis is to examine the USDA zone info for Zone 11a.

Planting Calendar for Calliopsis

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

Since calliopsis require warm weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant calliopsis in Zone 11a is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant calliopsis and expect a good harvest is probably November. Any later than that and your calliopsis may not have a chance to really do well. You can get started a couple of weeks earlier by starting your calliopsis indoors.

Last Frost Date

In Zone 11a it never frosts. You should expect an average low temperature of 40°F in the coldest months of winter.

Since the USDA zone info for Zone 11a is just an average the actual date of last frost changes from year to year. Since it never frosts in Zone 11a you do not have to be ready to protect your calliopsis if you have one of those late frosts.

USDA Zone Info for Zone 11a

Here is the info for USDA Zone 11a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	40°F
Highest Expected Low	45°F

This means that on a really cold year, the coldest it will get is 40°F. On most years you should be prepared to experience lows near 45°F.

Plants to Grow in Zone 11a

You may be interested in your other planting guides for Zone 11a.