The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when it's a good idea to plant scarlet runner beans is to refer to the USDA zone info for Poway.

Planting Calendar for Scarlet Runner Beans

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

You really shouldn't plant scarlet runner beans until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant scarlet runner beans in Poway 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 scarlet runner beans and expect a good harvest is probably September. You probably don't want to wait any later than that or else your scarlet runner beans may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your scarlet runner beans indoors.

Last Frost Date

On average the last frost is on February 15 in Poway. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Poway may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Poway last frost occurs after February 15 be ready to cover your scarlet runner beans if you have a surprise late frost.

USDA Zone Info for Poway

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 Poway

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