When can I plant Liatris in Zone 2a

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

You can determine when it's the best time to plant liatris in Zone 2a by using the USDA zone info.


Planting Calendar for Liatris

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

Since liatris are one of those plants that can tolerate quite a bit of cold weather you can plant them quite a bit earlier in the year than more sensitive plants.

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

The earliest that you can plant liatris in Zone 2a is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant liatris and expect a good harvest is probably August. Any later than that and your liatris may not have a chance to grow to maturity. If you are starting your liatris indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 2a. In the coldest months of winter we can expect an average low temperature of -50°F.

It's important to remember that our actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 2a and it changes from year to year. Since half of the time in Zone 2a it frosts late in the year after May 15 be ready to protect your liatris in the event of a surprise late frost.

USDA Zone Info for Zone 2a

Here is the info for USDA Zone 2a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)August 15
Lowest Expected Low-50°F
Highest Expected Low-45°F

This means that on a really cold year, the coldest it will get is -50°F. On most years you should be prepared to experience lows near -45°F.

Plants to Grow in Zone 2a

You may be interested in our other planting guides for Zone 2a.