The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By looking at the USDA zone info for Prosser you should be able to estimate when it's possible to plant crassula.

Planting Calendar for Crassula

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

Since crassula require warm weather it is important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant crassula in Prosser 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 crassula and expect a good harvest is probably August. Any later than that and your crassula may not have a chance to really do well. Starting your crassula indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Prosser. You should expect an average low temperature of 0°F in the coldest months of winter.

It's important to remember that USDA zone info for Prosser is an average and the actual date of last frost will vary from year to year. Half of the time in Prosser you get a frost after April 15 so always be ready to protect your crassula in the event of one of those late frosts.

USDA Zone Info for Prosser

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 Prosser

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