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.

By using the USDA zone info for Colusa you should be able to estimate when it's possible to plant snap beans.

Planting Calendar for Snap beans

Frost tolerance for snap beans:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Snap beans do not do well in cold weather which means that it's necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant snap beans in Colusa is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant snap beans and expect a good harvest is probably September. Any later than that and your snap beans may not have a chance to really do well. If you are starting your snap beans indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Colusa. You should expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Colusa and it is different every year. Half of the time in Colusa you get surprised by a frost after February 15 so make sure that you are prepared to cover your snap beans in the event of a late frost.

USDA Zone Info for Colusa

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 Colusa

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