One of the first steps you take when you are getting a good idea 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.

The first chance to plant achillea in Warren should be figured out by checking out 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.

Achillea can survive in cold weather which means that you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant achillea in Warren 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

The average date of last frost is April 15 in Warren. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Warren is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Warren you get a frost after April 15 so be sure to be ready to protect your achillea if you have a late frost.

USDA Zone Info for Warren

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Warren

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