One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

By checking out the USDA zone info for Saline you should be able to estimate when it's the best time to plant achillea.

Planting Calendar for Achillea

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

Since achillea do well in cold you can plant them quite a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant achillea in Saline 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. You probably don't want to wait any later than that or else your achillea may not have a chance to really do well. 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 Saline. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Saline may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Saline you get a frost after April 15 so always be ready to protect your achillea in the event of one of those late frosts.

USDA Zone Info for Saline

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 Saline

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