When can I plant Asters in Zone 12a

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

You can determine when to plant asters in Zone 12a by looking at the USDA zone info.


Planting Calendar for Asters

Frost tolerance for asters: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

You can plant asters a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant asters
Possibly ok, but a risky time to plant asters
Probably not a good time to plant asters

The earliest that you can plant asters 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 asters and expect a good harvest is probably November. Any later than that and your asters may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your asters indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Zone 12a is not always accurate and our 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 asters if we 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 Low50°F
Highest Expected Low55°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 our other planting guides for Zone 12a.