One of the first steps you take when you are estimating your gardening schedule is find your 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.

You can estimate when it's possible to plant sweet sultan in Key Biscayne by reviewing the USDA zone info.

Planting Calendar for Sweet Sultan

Frost tolerance for sweet sultan:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sweet Sultan are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant sweet sultan in Key Biscayne 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 sweet sultan and expect a good harvest is probably November. If you wait any later than that and your sweet sultan may not have a chance to really do well. If you are starting your sweet sultan indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Key Biscayne it never frosts. In the coldest months of winter you should expect an average low temperature of 40°F.

Just be sure to 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 Key Biscayne and it can change quite a bit from year to year. Since it never frosts in Key Biscayne you do not have to be ready to cover your sweet sultan in the event of one of those late frosts.

USDA Zone Info for Key Biscayne

Here is the info for USDA Zone 11a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	40°F
Highest Expected Low	45°F

This means that on a really cold year, the coldest it will get is 40°F. On most years you should be prepared to experience lows near 45°F.

Plants to Grow in Key Biscayne

You may be interested in your other planting guides for Key Biscayne.