When can I plant Chrysanthemum in Zone 9b

The USDA Zone info is a great tool for gardeners to help us determine our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

A common way of figuring out when it's the best time to plant chrysanthemum is to refer to the USDA zone info for Zone 9b.


Planting Calendar for Chrysanthemum

Frost tolerance for chrysanthemum: Not tolerant of frost.
When you should plant them: After the last frost.

Since chrysanthemum are not cold tolerant it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant chrysanthemum in Zone 9b is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chrysanthemum and expect a good harvest is probably September. If you wait any later than that and your chrysanthemum may not have a chance to fully mature. If you are starting your chrysanthemum indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on February 15 in Zone 9b. We can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Zone 9b may not be accurate from year to year our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 9b we get surprised by a frost after February 15 so always be ready to cover your chrysanthemum if we have a late frost.

USDA Zone Info for Zone 9b

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)February 15
Average Date of First Frost (fall)December 15
Lowest Expected Low25°F
Highest Expected Low30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Zone 9b

You may be interested in our other planting guides for Zone 9b.