Before planting it is a good idea to find your USDA Zone info to determine 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 first opportunity to plant heuchera in Zone 12b can be determined by reviewing the USDA zone info.

Planting Calendar for Heuchera

Frost tolerance for heuchera:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since heuchera do well in moderate cold you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant heuchera in Zone 12b 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 heuchera and expect a good harvest is probably November. You probably don't want to wait any later than that or else your heuchera may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your heuchera indoors.

Last Frost Date

In Zone 12b it never frosts. You can expect an average low temperature of 55°F in the coldest months of winter.

Since the USDA zone info for Zone 12b is just an average the actual date of last frost changes from year to year. Since it never frosts in Zone 12b you do not have to be ready to cover your heuchera if you have one of those late frosts.

USDA Zone Info for Zone 12b

Here is the info for USDA Zone 12b.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	55°F
Highest Expected Low	60°F

This means that on a really cold year, the coldest it will get is 55°F. On most years you should be prepared to experience lows near 60°F.

Plants to Grow in Zone 12b

You may be interested in your other planting guides for Zone 12b.