Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of figuring out when to plant gaillardia is to refer to the USDA zone info for Casa Grande.

Planting Calendar for Gaillardia

Frost tolerance for gaillardia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since gaillardia are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant gaillardia in Casa Grande 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 gaillardia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your gaillardia may not have a chance to really do well. You can get started a few weeks earlier by starting your gaillardia indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Casa Grande. In the coldest months of winter you should expect an average low temperature of 5°F.

Since the USDA zone info for Casa Grande may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Casa Grande there is a last frost after April 15 so be sure to be ready to cover your gaillardia if you have 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.