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

The USDA zone info for Islamorada can be reffered to in order to estimate when it's possible to plant dahlias.

Planting Calendar for Dahlias

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

Dahlias are not cold tolerant which means that you must wait until it warms up after all chance of frost has passed before you can plant them.

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

Last Frost Date

In Islamorada 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 USDA zone info for Islamorada is an average and the actual date of last frost can change quite a bit from year to year. Since it never frosts in Islamorada you do not have to be ready to cover your dahlias if you have a late frost.

USDA Zone Info for Islamorada

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 Islamorada

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