Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Trenton should be used to estimate 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 when the weather gets warmer.

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

The earliest that you can plant crossandra in Trenton 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. Any later than that and your crossandra may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your crossandra indoors.

Last Frost Date

The average date of last frost is April 15 in Trenton. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Trenton is an average the actual date of last frost is different every year. Half of the time in Trenton last frost occurs after April 15 so be sure to be ready to cover your crossandra if you have a surprise late frost.

USDA Zone Info for Trenton

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Trenton

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