When can I plant Ageratum in Zone 12b

One of the first steps we take when we are estimating 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 estimate when to plant ageratum in Zone 12b by checking out the USDA zone info.


Planting Calendar for Ageratum

Frost tolerance for ageratum: Not tolerant of frost.
When you should plant them: After all chance of frost has passed.

Since ageratum require warm weather it is important to wait until after all chance of frost has passed before you can plant them.

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

The earliest that you can plant ageratum 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 ageratum and expect a good harvest is probably November. If you wait any later than that and your ageratum may not have a chance to really do well. Starting your ageratum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Zone 12b is not always accurate and our 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 ageratum if we have a surprise 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 Low55°F
Highest Expected Low60°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 our other planting guides for Zone 12b.