One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when it's possible to plant scarlet runner beans by referring to the USDA zone info for Pacific.

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.

Since scarlet runner beans do not do well in cold weather you must wait until after the last frost before you can plant them.

The earliest that you can plant scarlet runner beans in Pacific is April. However, you really should wait until May 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 August. You probably don't want to wait any later than that or else your scarlet runner beans may not have a chance to fully mature. If you are starting your scarlet runner beans indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on March 15 in Pacific. In the coldest months of winter you can expect an average low temperature of 15°F.

Remember that USDA zone info for Pacific is an average and the actual date of last frost changes from year to year. Since half of the time in Pacific you get surprised by a frost after March 15 be ready to protect your scarlet runner beans if you have one of those late frosts.

USDA Zone Info for Pacific

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Pacific

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