Before planting it is a good idea to find your USDA Zone info to estimate 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 USDA zone info for Zone 12b should be read to estimate when it's a good idea to plant iresene.

Planting Calendar for Iresene

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

Iresene require warm weather which tells us that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant iresene 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 iresene and expect a good harvest is probably November. You probably don't want to wait any later than that or else your iresene may not have a chance to grow to maturity. Starting your iresene indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Zone 12b is just an average the actual date of last frost can change quite a bit from year to year. Since it never frosts in Zone 12b you do not have to be ready to cover your iresene in the event of a late frost.

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.