The USDA Zone info is a great tool for gardeners to help us figure out 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.

In Key Biscayne you can estimate when it's the best time to plant amaranthus by using the USDA zone info.

Planting Calendar for Amaranthus

Frost tolerance for amaranthus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You should not plant amaranthus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant amaranthus 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 amaranthus and expect a good harvest is probably November. Any later than that and your amaranthus may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your amaranthus indoors.

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.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Key Biscayne and it will vary from year to year. Since it never frosts in Key Biscayne you do not have to be ready to cover your amaranthus in the event of a late frost.

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.