When can I plant Achillea in Zone 1a

One of the best tools that we have as gardeners to help us estimate our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

It's possible to estimate when it's a good idea to plant achillea by using the USDA zone info for Zone 1a.


Planting Calendar for Achillea

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

Achillea tend to make it in pretty solid cold which means that you can plant them earlier in the year than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant achillea
Possibly ok, but a risky time to plant achillea
Probably not a good time to plant achillea

The earliest that you can plant achillea in Zone 1a is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant achillea and expect a good harvest is probably July. You probably don't want to wait any later than that or else your achillea may not have a chance to grow to maturity. If you are starting your achillea indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Zone 1a the average date of last frost happens on June 15. In the coldest months of winter we can expect an average low temperature of -60°F.

Just be sure to remember that USDA zone info for Zone 1a may not be accurate from year to year and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 1a last frost occurs after June 15 be ready to cover your achillea in the event of a surprise late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in our other planting guides for Zone 1a.