The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Alpharetta you can figure out when it's possible to plant echinacea by referring to the USDA zone info.

Planting Calendar for Echinacea

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

You can plant echinacea just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant echinacea in Alpharetta 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 echinacea and expect a good harvest is probably August. If you wait any later than that and your echinacea may not have a chance to fully mature. Starting your echinacea indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Alpharetta the average date of last frost happens on April 15. It might get as low as 5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Alpharetta is not always accurate and the actual date of last frost is different every year. Half of the time in Alpharetta there is a last frost after April 15 so always be ready to protect your echinacea if you have a surprise late frost.

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.