When to Plant Doronicum in Zone 1b

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

The USDA zone info for Zone 1b should be used to estimate when it's possible to plant doronicum.


Planting Calendar for Doronicum

Frost tolerance for doronicum: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Doronicum do ok in some cold which tells us that you can plant them just a bit earlier in the year than other frost tender plants.

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

The earliest that you can plant doronicum in Zone 1b 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 doronicum and expect a good harvest is probably July. If you wait any later than that and your doronicum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your doronicum indoors.

Last Frost Date

In Zone 1b the average date of last frost happens on June 15. In the coldest months of winter you should expect an average low temperature of -55°F.

Since the USDA zone info for Zone 1b is just an average the actual date of last frost changes from year to year. Half of the time in Zone 1b it frosts late in the year after June 15 so make sure that you are ready to protect your doronicum in the event of a surprise late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in your other planting guides for Zone 1b.