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.

The USDA zone info for Mountain View should be read to figure out when it's the best time to plant runner beans.

Planting Calendar for Runner beans

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

It's probably a bad idea to plant runner beans until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant runner beans in Mountain View 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 runner beans and expect a good harvest is probably September. If you wait any later than that and your runner beans may not have a chance to grow to maturity. If you are starting your runner beans indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Mountain View the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Mountain View and it will vary from year to year. Since half of the time in Mountain View you get surprised by a frost after January 31 be ready to protect your runner beans in the event of a late frost.

USDA Zone Info for Mountain View

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Mountain View

You may be interested in your other planting guides for Mountain View.