The USDA Zone info is a great tool for gardeners to help us estimate 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 making a decision about when to plant tree onions is to look at the USDA zone info for Orange Beach.

Planting Calendar for Tree onions

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

Tree onions are barely cold tolerant which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant tree onions in Orange Beach is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant tree onions and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tree onions may not have a chance to fully mature. You can get started a few weeks earlier by starting your tree onions indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Orange Beach. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for Orange Beach may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Orange Beach it frosts late in the year after February 15 so be sure to be ready to cover your tree onions in the event of one of those late frosts.

USDA Zone Info for Orange Beach

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 Orange Beach

You may be interested in your other planting guides for Orange Beach.