Before planting it is a good idea to find your USDA Zone info to estimate 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.

By reviewing the USDA zone info for Honolulu you should be able to figure out when it's a good idea to plant tagetes.

Planting Calendar for Tagetes

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

You can not plant tagetes until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant tagetes 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 tagetes and expect a good harvest is probably November. You probably don't want to wait any later than that or else your tagetes may not have a chance to fully mature. Starting your tagetes indoors is a great way to get them started a couple of weeks 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 may not be accurate from year to year 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 protect your tagetes 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.