Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant scarlet runner beans in Berkeley should be figured out by reviewing the USDA zone info.

Planting Calendar for Scarlet Runner Beans

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

It's not a good idea to plant scarlet runner beans until after the last frost has passed because they require warm weather.

The earliest that you can plant scarlet runner beans in Berkeley 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 scarlet runner beans and expect a good harvest is probably September. If you wait any later than that and your scarlet runner beans may not have a chance to fully mature. You can get started a little bit earlier by starting your scarlet runner beans indoors.

Last Frost Date

On average the last frost is on January 31 in Berkeley. In the coldest months of winter you should expect an average low temperature of 30°F.

It's important to remember that USDA zone info for Berkeley may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Berkeley it frosts late in the year after January 31 so make sure that you are prepared to protect your scarlet runner beans in the event of a surprise late frost.

USDA Zone Info for Berkeley

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 Berkeley

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