The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant iceberg lettuce in Zone 13b should be determined by referring to the USDA zone info.

Planting Calendar for Iceberg lettuce

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

Iceberg lettuce can survive in very little cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant iceberg lettuce in Zone 13b 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 iceberg lettuce and expect a good harvest is probably November. You probably don't want to wait any later than that or else your iceberg lettuce may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your iceberg lettuce indoors.

Last Frost Date

In Zone 13b it never frosts. You should expect an average low temperature of 65°F in the coldest months of winter.

Since the USDA zone info for Zone 13b is an average the actual date of last frost can change quite a bit from year to year. Since it never frosts in Zone 13b you do not have to be ready to cover your iceberg lettuce if you have one of those late frosts.

USDA Zone Info for Zone 13b

Here is the info for USDA Zone 13b.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	65°F
Highest Expected Low	70°F

This means that on a really cold year, the coldest it will get is 65°F. On most years you should be prepared to experience lows near 70°F.

Plants to Grow in Zone 13b

You may be interested in your other planting guides for Zone 13b.