One of the first steps you take when you are determining your gardening schedule is find your 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.

A common way of determining when to plant coral bells is to refer to the USDA zone info for Alpharetta.

Planting Calendar for Coral Bells

Frost tolerance for coral bells:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since coral bells are one of those plants that can tolerate a little bit of cold weather you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant coral bells in Alpharetta 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 coral bells and expect a good harvest is probably September. If you wait any later than that and your coral bells may not have a chance to fully mature. You can get started a few weeks earlier by starting your coral bells indoors.

Last Frost Date

The average date of last frost is April 15 in Alpharetta. It might get as low as 5°F during the coldest months of winter.

Keep in mind that USDA zone info for Alpharetta is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Alpharetta there is a last frost after April 15 be ready to cover your coral bells if you have one of those late frosts.

USDA Zone Info for Alpharetta

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 Alpharetta

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