Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of estimating when you can plant achillea is to look at the USDA zone info for Rome.

Planting Calendar for Achillea

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

Achillea are very cold tolerant which tells us that you can start planting them much earlier than other frost tender plants.

The earliest that you can plant achillea in Rome 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. Starting your achillea indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Rome. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Rome is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Rome last frost occurs after April 15 be ready to cover your achillea if you have one of those late frosts.

USDA Zone Info for Rome

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 Rome

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