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.

A way of determining when it's the best time to plant asparagus fern is to use the USDA zone info for Key Biscayne.

Planting Calendar for Asparagus Fern

Frost tolerance for asparagus fern:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since asparagus fern do not do well in cold weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant asparagus fern 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 asparagus fern and expect a good harvest is probably November. If you wait any later than that and your asparagus fern may not have a chance to fully mature. You can get started a few weeks earlier by starting your asparagus fern indoors.

Last Frost Date

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

Since the USDA zone info for Key Biscayne is not always accurate the actual date of last frost will vary from year to year. Since it never frosts in Key Biscayne you do not have to be ready to protect your asparagus fern if you have 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.