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

In Zone 9b you can figure out when it's the best time to plant chinese chives by looking at the USDA zone info.

Planting Calendar for Chinese chives

Frost tolerance for chinese chives:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant chinese chives just a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant chinese chives 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 chinese chives and expect a good harvest is probably October. You probably don't want to wait any later than that or else your chinese chives may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your chinese chives indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Zone 9b. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Zone 9b is not always accurate the actual date of last frost is different every year. Half of the time in Zone 9b you get surprised by a frost after February 15 so make sure that you are ready to cover your chinese chives in the event of one of those late frosts.

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 Low	25°F
Highest Expected Low	30°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 your other planting guides for Zone 9b.