The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant bidens in Honolulu should be estimated by reviewing the USDA zone info.

Planting Calendar for Bidens

Frost tolerance for bidens:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since bidens do not do well in cold weather it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant bidens 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 bidens and expect a good harvest is probably November. If you wait any later than that and your bidens may not have a chance to fully mature. You can get started a little bit earlier by starting your bidens indoors.

Last Frost Date

In Honolulu it never frosts. In the coldest months of winter you can expect an average low temperature of 50°F.

Remember that USDA zone info for Honolulu is not always accurate and the actual date of last frost changes from year to year. Since it never frosts in Honolulu you do not have to be ready to cover your bidens in the event of a surprise 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.