One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Athens you can estimate when it's a good idea to plant achillea by reviewing the USDA zone info.

Planting Calendar for Achillea

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

Since achillea are very cold tolerant you can plant them earlier in the year than other frost tender plants.

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

Last Frost Date

On average all chance of frost has passed is on April 15 in Athens. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Athens is an average the actual date of last frost changes from year to year. Half of the time in Athens you get surprised by a frost after April 15 so be sure to be ready to cover your achillea if you have a late frost.

USDA Zone Info for Athens

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 Athens

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