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 to plant evolvulus is to look at the USDA zone info for Shafter.

Planting Calendar for Evolvulus

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

It's probably a bad idea to plant evolvulus until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant evolvulus in Shafter 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 evolvulus and expect a good harvest is probably September. Any later than that and your evolvulus may not have a chance to fully mature. Starting your evolvulus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Shafter the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 20°F.

It's important to remember that USDA zone info for Shafter is not always accurate and the actual date of last frost changes from year to year. Half of the time in Shafter you get a frost after February 15 so always be ready to protect your evolvulus if you have a late frost.

USDA Zone Info for Shafter

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 Shafter

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