The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when it's the best time to plant crossandra is to check out the USDA zone info for Harrisburg.

Planting Calendar for Crossandra

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

Since crossandra are not cold tolerant it's important to wait until after the last frost before you can plant them.

The earliest that you can plant crossandra in Harrisburg 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 crossandra and expect a good harvest is probably August. You probably don't want to wait any later than that or else your crossandra may not have a chance to fully mature. You can get started a few weeks earlier by starting your crossandra indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Harrisburg. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Harrisburg is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Harrisburg it frosts late in the year after April 15 so always be ready to protect your crossandra in the event of one of those late frosts.

USDA Zone Info for Harrisburg

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 Harrisburg

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