When can I plant Mustard greens in Zone 9b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

You can determine when it's a good idea to plant mustard greens in Zone 9b by reviewing the USDA zone info.


Planting Calendar for Mustard greens

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

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

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

The earliest that you can plant mustard greens in Zone 9b 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 mustard greens and expect a good harvest is probably October. You probably don't want to wait any later than that or else your mustard greens may not have a chance to really do well. You can get started a few weeks earlier by starting your mustard greens indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Zone 9b may not be accurate from year to year and our actual date of last frost is different every year. Since half of the time in Zone 9b it frosts late in the year after February 15 be ready to protect your mustard greens 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.