One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to determine when it's a good idea to plant scarlet runner beans by referring to the USDA zone info for Knightdale.

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.

Scarlet Runner Beans are not cold tolerant which tells us that you really should wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant scarlet runner beans in Knightdale 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. 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 when the weather gets warmer is on April 15 in Knightdale. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Knightdale is just an average the actual date of last frost changes from year to year. Since half of the time in Knightdale you get a frost after April 15 be ready to protect your scarlet runner beans in the event of one of those late frosts.

USDA Zone Info for Knightdale

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Knightdale

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