Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when to plant petunias by reviewing the USDA zone info for Miami.

Planting Calendar for Petunias

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

Petunias do ok in a tiny bit of cold which means that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant petunias in Miami 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 petunias and expect a good harvest is probably November. Any later than that and your petunias may not have a chance to really do well. You can get started a few weeks earlier by starting your petunias indoors.

Last Frost Date

In Miami it never frosts. You should expect an average low temperature of 40°F in the coldest months of winter.

Since the USDA zone info for Miami is just an average the actual date of last frost will vary from year to year. Since it never frosts in Miami you do not have to be ready to protect your petunias if you have a surprise late frost.

USDA Zone Info for Miami

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 Miami

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