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

By referring to the USDA zone info for Jackson it's possible to figure out when it's a good idea to plant crossandra.

Planting Calendar for Crossandra

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

Crossandra are not cold tolerant which tells us that it's important to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant crossandra in Jackson is May. However, you really should wait until June if you don't want to take any chances.

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

Last Frost Date

In Jackson the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Jackson is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Jackson last frost occurs after May 15 so just be sure to be ready to protect your crossandra if you have a surprise late frost.

USDA Zone Info for Jackson

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

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

Plants to Grow in Jackson

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