When can I plant Cuphea in Zone 2b

The USDA Zone info is a great tool for gardeners to help us estimate 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 2b can be reviewed to determine when it's possible to plant cuphea.


Planting Calendar for Cuphea

Frost tolerance for cuphea: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Since cuphea require warm weather it is important to wait until after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant cuphea 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 cuphea and expect a good harvest is probably August. If you wait any later than that and your cuphea may not have a chance to fully mature. Starting your cuphea 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 2b. It might get as low as -45°F during the coldest months of winter.

Always keep in mind that our actual date of last frost is just an average because it is based on the USDA zone info for Zone 2b and it can change quite a bit from year to year. Half of the time in Zone 2b there is a last frost after May 15 so be sure to be ready to cover your cuphea in the event of 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.