One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's a good idea to plant erysimum by looking at the USDA zone info for Zone 12a.

Planting Calendar for Erysimum

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

You can plant erysimum a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant erysimum in Zone 12a 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 erysimum and expect a good harvest is probably November. Any later than that and your erysimum may not have a chance to fully mature. If you are starting your erysimum indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Zone 12a it never frosts. It might get as low as 50°F during the coldest months of winter.

It's important to remember that USDA zone info for Zone 12a is an average and the actual date of last frost is different every year. Since it never frosts in Zone 12a you do not have to be ready to cover your erysimum if you have one of those late frosts.

USDA Zone Info for Zone 12a

Here is the info for USDA Zone 12a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	50°F
Highest Expected Low	55°F

This means that on a really cold year, the coldest it will get is 50°F. On most years you should be prepared to experience lows near 55°F.

Plants to Grow in Zone 12a

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