One of the first steps you take when you are getting a good idea 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.

You should be able to figure out when you can plant pole beans by referring to the USDA zone info for Napa.

Planting Calendar for Pole beans

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

Since pole beans require warm weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant pole beans in Napa 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. If you wait any later than that and your pole beans may not have a chance to really do well. You can get started a few weeks earlier by starting your pole beans indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Napa. It might get as low as 25°F during the coldest months of winter.

Keep in mind that USDA zone info for Napa is an average and the actual date of last frost will vary from year to year. Since half of the time in Napa you get a frost after February 15 be ready to protect your pole beans if you have one of those late frosts.

USDA Zone Info for Napa

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 Napa

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