One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant cuphea in Palmer can be determined by using the USDA zone info.

Planting Calendar for Cuphea

Frost tolerance for cuphea:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant cuphea until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant cuphea in Palmer 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 couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Palmer. In the coldest months of winter you should expect an average low temperature of -25°F.

Just be sure to remember that USDA zone info for Palmer is just an average and the actual date of last frost is different every year. Half of the time in Palmer there is a last frost after May 15 so make sure that you are ready to cover your cuphea if you have a late frost.

USDA Zone Info for Palmer

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Palmer

You may be interested in your other planting guides for Palmer.