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

By looking at the USDA zone info for Grass Valley it's a good idea to estimate when it's possible to plant crossandra.

Planting Calendar for Crossandra

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

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

The earliest that you can plant crossandra in Grass Valley 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 really do well. You can get started a couple of weeks earlier by starting your crossandra indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Grass Valley. In the coldest months of winter you should expect an average low temperature of 20°F.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Grass Valley and it will vary from year to year. Since half of the time in Grass Valley last frost occurs after February 15 be ready to cover your crossandra if you have one of those late frosts.

USDA Zone Info for Grass Valley

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 Grass Valley

You may be interested in your other planting guides for Grass Valley.