Growing Scarlet Runner Seeds
- Latin Name: Phaseolus coccineus
- Other Names: Scarlet Runners
- Days to Maturity: 60-70 days
- Hardiness Zone: 3-9
- Planting Depth: 2"
- Plant Spacing: 12"
- Row Spacing: 18"
- Growth Habit: Mound/Bush
- Soil Preference: Well drained, 6 to 7 ph level
- Temp Preference: Warmer
- Light Preference: Full sun is required.
- Pests/diseases: Birds can peck at the vines and beans
- Color: red
- Flavor: Nutty flavor with a creamy texture.
These seeds can be sown indoors by placing them two inches deep in potted soil, and transplanted outside after seven to ten weeks, when the threat of frost has passed. Conversely, you may sow them directly outdoors by placing them two inches deep in the soil, twelve inches apart, and with eighteen inches between rows. Because these seeds will grow in a vine, they will need a support, such as a cane or frame. Ideally, these will be in place at the time of germination; however, you should still find success if the support is put in place shortly after. Regular watering is required, and these vines will grow to impressive lengths in a relatively brief period of time.
10-foot vines are covered in attractive red blossoms borne in clusters. The more you pick, the more they produce. Most should bear pods from late July and cropping of all types can continue until the first frosts, or longer if plants are protected. Runner beans are at their best when fresh, young and tender. They should be harvested when the pods are less than full length, snap easily and while the seeds are still small and pale in colour. Picking green beans often help to promote more growth and increase yields. As the pods get older they develop string and the pod-walls become more fibrous, with pronounced bumps on the surface indicating that the seeds are enlarging and that moisture is going into the seed from the pod.