The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant borage in Honolulu should be estimated by checking out the USDA zone info.

Planting Calendar for Borage

Frost tolerance for borage:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Borage do well in moderate cold which tells us that you can start planting them earlier than other frost tender plants.

The earliest that you can plant borage 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 borage and expect a good harvest is probably November. If you wait any later than that and your borage may not have a chance to really do well. You can get started a couple of weeks earlier by starting your borage indoors.

Last Frost Date

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

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Honolulu and it can change quite a bit from year to year. Since it never frosts in Honolulu you do not have to be ready to cover your borage in the event of one of those late frosts.

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.