When can I plant Doronicum in Zone 4a

The USDA Zone info is a great tool for gardeners to help us determine our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

In Zone 4a you can estimate when it's a good idea to plant doronicum by reviewing the USDA zone info.


Planting Calendar for Doronicum

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

Since doronicum are moderately cold tolerant you can plant them a little 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 4a is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant doronicum and expect a good harvest is probably August. Any later than that and your doronicum may not have a chance to fully mature. Starting your doronicum indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 4a. In the coldest months of winter we can expect an average low temperature of -30°F.

Remember that USDA zone info for Zone 4a is not always accurate and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 4a it frosts late in the year after May 15 be ready to cover your doronicum in the event of a surprise late frost.

USDA Zone Info for Zone 4a

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-30°F
Highest Expected Low-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Zone 4a

You may be interested in our other planting guides for Zone 4a.