One of the best tools that you have as gardeners to help us figure out 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.

By checking out the USDA zone info for Sunnyvale you should be able to determine when it's possible to plant chives.

Planting Calendar for Chives

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

You can plant chives quite a bit earlier in the year because they are very cold tolerant.

The earliest that you can plant chives in Sunnyvale is February. However, you really should wait until March if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is March 15 in Sunnyvale. In the coldest months of winter you can expect an average low temperature of 10°F.

Keep in mind that USDA zone info for Sunnyvale may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Sunnyvale it frosts late in the year after March 15 so make sure that you are prepared to protect your chives if you have one of those late frosts.

USDA Zone Info for Sunnyvale

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Sunnyvale

You may be interested in your other planting guides for Sunnyvale.