One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Sunnyvale you should be able to determine when to plant pole beans.

Planting Calendar for Pole beans

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

Since pole beans require warm weather you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant pole beans in Sunnyvale 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 pole beans and expect a good harvest is probably September. Any later than that and your pole beans may not have a chance to really do well. Starting your pole beans indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Sunnyvale. In the coldest months of winter you should expect an average low temperature of 25°F.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Sunnyvale and it changes from year to year. Since half of the time in Sunnyvale you get surprised by a frost after February 15 be ready to cover your pole beans in the event of a surprise late frost.

USDA Zone Info for Sunnyvale

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 Sunnyvale

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