One of the best tools that you have as gardeners to help us estimate 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.

The best time to plant scarlet runner beans in Colton should be determined by checking out 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.

You really shouldn't 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 Colton 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. Any later than that and your scarlet runner beans may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your scarlet runner beans indoors.

Last Frost Date

The average date of last frost is February 15 in Colton. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Colton may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Colton it frosts late in the year after February 15 be ready to protect your scarlet runner beans in the event of a surprise late frost.

USDA Zone Info for Colton

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 Colton

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