When to Plant Purple Coneflower in Zone 1a

One of the first steps you take when you are determining 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.

In Zone 1a you can determine when it's the best time to plant purple coneflower by using the USDA zone info.


Planting Calendar for Purple Coneflower

Frost tolerance for purple coneflower: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Purple Coneflower can survive in very little cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

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

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

The last month that you can plant purple coneflower and expect a good harvest is probably July. If you wait any later than that and your purple coneflower may not have a chance to fully mature. Starting your purple coneflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on June 15 in Zone 1a. You should expect an average low temperature of -60°F in the coldest months of winter.

Since the USDA zone info for Zone 1a may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Zone 1a you get a frost after June 15 so always be ready to cover your purple coneflower in the event of one of those late frosts.

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 your other planting guides for Zone 1a.