Before planting it is a good idea to find your USDA Zone info to figure out 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.

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

Planting Calendar for Scarlet Runner Beans

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

Scarlet Runner Beans require warm weather which tells us that it is necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant scarlet runner beans in Brenham 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 fully mature. 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 Brenham. In the coldest months of winter you can expect an average low temperature of 20°F.

Remember that USDA zone info for Brenham 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 Brenham you get a frost after February 15 so be sure to be ready to cover your scarlet runner beans in the event of one of those late frosts.

USDA Zone Info for Brenham

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Brenham

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