Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for National City can be read to estimate when it's a good idea to plant chinese chives.

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 are moderately cold tolerant you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant chinese chives in National 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. 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 few weeks earlier by starting your chinese chives indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in National City. It might get as low as 35°F during the coldest months of winter.

Remember that USDA zone info for National City may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in National City there is a last frost after January 31 be ready to cover your chinese chives if you have a late frost.

USDA Zone Info for National City

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in National City

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