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 best time to plant crossandra in Warrenton should be estimated by looking at the USDA zone info.

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 you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant crossandra in Warrenton 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. If you wait any later than that and your crossandra may not have a chance to grow to maturity. Starting your crossandra indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Warrenton. You should expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Warrenton is not always accurate the actual date of last frost changes from year to year. Half of the time in Warrenton you get surprised by a frost after February 15 so just be sure to be ready to protect your crossandra if you have a late frost.

USDA Zone Info for Warrenton

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 Warrenton

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