One of the best tools that you have as gardeners to help us estimate your 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 your area.

One way of getting a good idea when you can plant chinese chives is to refer to the USDA zone info for Redwood City.

Planting Calendar for Chinese chives

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

Since chinese chives do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant chinese chives in Redwood City 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. If you wait any later than that and your chinese chives may not have a chance to really do well. You can get started a little bit earlier by starting your chinese chives indoors.

Last Frost Date

The average date of last frost is February 15 in Redwood City. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Redwood City is just an average the actual date of last frost is different every year. Half of the time in Redwood City last frost occurs after February 15 so make sure that you are prepared to protect your chinese chives in the event of a surprise late frost.

USDA Zone Info for Redwood City

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 Redwood City

You may be interested in your other planting guides for Redwood City.