The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can estimate when you can plant chives in Houston by referring to the USDA zone info.

Planting Calendar for Chives

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

Chives are very cold tolerant which tells us that you can plant them much earlier than plants that are more sensitive to the cold.

The earliest that you can plant chives in Houston 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. You probably don't want to wait any later than that or else your chives may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your chives indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Houston. You should expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Houston is an average the actual date of last frost will vary from year to year. Half of the time in Houston you get surprised by a frost after February 15 so just be sure to be ready to protect your chives in the event of a surprise late frost.

USDA Zone Info for Houston

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Houston

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