When can I plant Calibrachoa in Zone 2b

One of the first steps we take when we are figuring out our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By checking out the USDA zone info for Zone 2b you will be able to estimate when you can plant calibrachoa.


Planting Calendar for Calibrachoa

Frost tolerance for calibrachoa: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

Calibrachoa are barely cold tolerant which tells us that you can plant them slightly earlier than other plants that might not handle the cold.

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

The earliest that you can plant calibrachoa in Zone 2b 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 calibrachoa and expect a good harvest is probably August. If you wait any later than that and your calibrachoa may not have a chance to fully mature. You can get started a few weeks earlier by starting your calibrachoa indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 2b. We should expect an average low temperature of -45°F in the coldest months of winter.

Always keep in mind that USDA zone info for Zone 2b is an average and our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 2b last frost occurs after May 15 be ready to protect your calibrachoa if we have a late frost.

USDA Zone Info for Zone 2b

Here is the info for USDA Zone 2b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)August 15
Lowest Expected Low-45°F
Highest Expected Low-40°F

This means that on a really cold year, the coldest it will get is -45°F. On most years you should be prepared to experience lows near -40°F.

Plants to Grow in Zone 2b

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