When can I plant Carnation in Zone 3b

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.

The USDA zone info for Zone 3b should be reffered to in order to estimate when it's a good idea to plant carnation.


Planting Calendar for Carnation

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

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

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

The earliest that you can plant carnation in Zone 3b 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 carnation and expect a good harvest is probably August. If you wait any later than that and your carnation may not have a chance to really do well. If you are starting your carnation indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Zone 3b. We should expect an average low temperature of -35°F in the coldest months of winter.

It's important to remember that our actual date of last frost is an average because it is based on the USDA zone info for Zone 3b and it will vary from year to year. Since half of the time in Zone 3b we get surprised by a frost after May 15 be ready to cover your carnation if we have a late frost.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in our other planting guides for Zone 3b.