One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. 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 crossandra is to look at the USDA zone info for Zone 9a.

Planting Calendar for Crossandra

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

It's not a good idea to plant crossandra until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant crossandra in Zone 9a is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant crossandra and expect a good harvest is probably September. You probably don't want to wait any later than that or else your crossandra may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your crossandra indoors.

Last Frost Date

The average date of last frost is February 15 in Zone 9a. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Zone 9a is an average the actual date of last frost changes from year to year. Since half of the time in Zone 9a you get surprised by a frost after February 15 be ready to protect your crossandra in the event of one of those late frosts.

USDA Zone Info for Zone 9a

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Zone 9a

You may be interested in your other planting guides for Zone 9a.