When can I plant Ageratum in Zone 11b

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The USDA zone info for Zone 11b can be reviewed to estimate when it's the best time to plant ageratum.


Planting Calendar for Ageratum

Frost tolerance for ageratum: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Ageratum do not do well in cold weather which tells us that it's important to wait until it warms up after the last frost when the weather gets warmer 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 11b 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. You can get started a little bit earlier by starting your ageratum indoors.

Last Frost Date

In Zone 11b it never frosts. We should expect an average low temperature of 45°F in the coldest months of winter.

Just be sure to remember that our actual date of last frost is an average because it is based on the USDA zone info for Zone 11b and it will vary from year to year. Since it never frosts in Zone 11b you do not have to be ready to protect your ageratum if we have a late frost.

USDA Zone Info for Zone 11b

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low45°F
Highest Expected Low50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Zone 11b

You may be interested in our other planting guides for Zone 11b.