One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant dahlia in Robertsdale should be determined by reviewing the USDA zone info.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

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

The earliest that you can plant dahlia in Robertsdale 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 dahlia and expect a good harvest is probably August. If you wait any later than that and your dahlia may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your dahlia indoors.

Last Frost Date

The average date of last frost is March 15 in Robertsdale. In the coldest months of winter you should expect an average low temperature of 15°F.

Keep in mind that USDA zone info for Robertsdale is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Robertsdale you get a frost after March 15 be ready to protect your dahlia if you have a surprise late frost.

USDA Zone Info for Robertsdale

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Robertsdale

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