The USDA Zone info is a great tool for gardeners to help us determine 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 referring to the USDA zone info for Donna it's a good idea to estimate when it's a good idea to plant garlic.

Planting Calendar for Garlic

Frost tolerance for garlic:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since garlic are very cold tolerant you can plant them quite a bit earlier in the year than other frost tender plants.

The earliest that you can plant garlic in Donna is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant garlic and expect a good harvest is probably October. You probably don't want to wait any later than that or else your garlic may not have a chance to fully mature. Starting your garlic indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Donna. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Donna is not always accurate the actual date of last frost changes from year to year. Half of the time in Donna you get a frost after February 15 so always be ready to protect your garlic if you have a surprise late frost.

USDA Zone Info for Donna

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Donna

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