One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of figuring out when it's the best time to plant evolvulus is to look at the USDA zone info for Casa Grande.

Planting Calendar for Evolvulus

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

It's a bad idea to plant evolvulus until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant evolvulus in Casa Grande 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 evolvulus and expect a good harvest is probably August. If you wait any later than that and your evolvulus may not have a chance to fully mature. If you are starting your evolvulus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Casa Grande. In the coldest months of winter you can expect an average low temperature of 5°F.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Casa Grande and it is different every year. Half of the time in Casa Grande last frost occurs after April 15 so always be ready to protect your evolvulus in the event of a surprise late frost.

USDA Zone Info for Casa Grande

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Casa Grande

You may be interested in your other planting guides for Casa Grande.