Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's possible to plant chives is to consult the USDA zone info for Chino Hills.

Planting Calendar for Chives

Frost tolerance for chives:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Chives do well in pretty solid cold which tells us that you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant chives in Chino Hills 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 chives and expect a good harvest is probably October. If you wait any later than that and your chives may not have a chance to fully mature. You can get started a few weeks earlier by starting your chives indoors.

Last Frost Date

The average date of last frost is January 31 in Chino Hills. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Chino Hills is just an average the actual date of last frost will vary from year to year. Since half of the time in Chino Hills you get a frost after January 31 be ready to cover your chives in the event of a surprise late frost.

USDA Zone Info for Chino Hills

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Chino Hills

You may be interested in your other planting guides for Chino Hills.