Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's the best time to plant cuphea in Honolulu by referring to the USDA zone info.

Planting Calendar for Cuphea

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

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

The earliest that you can plant cuphea in Honolulu is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant cuphea and expect a good harvest is probably November. 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

In Honolulu it never frosts. It might get as low as 50°F during the coldest months of winter.

Since the USDA zone info for Honolulu is not always accurate the actual date of last frost will vary from year to year. Since it never frosts in Honolulu you do not have to be ready to cover your cuphea if you have a late frost.

USDA Zone Info for Honolulu

Here is the info for USDA Zone 12a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	50°F
Highest Expected Low	55°F

This means that on a really cold year, the coldest it will get is 50°F. On most years you should be prepared to experience lows near 55°F.

Plants to Grow in Honolulu

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