Scarlet Emperor runner bean seeds produce plants that have large clusters of beautiful scarlet flowers. Rapid, vigorous growth make the classic Scarlet Emperor an ideal choice for screens, trellises, and balconies, and they are highly attractive to hummingbirds. Its masses of long pods are tender and tasty when smaller. The pods just keep coming as long as the plants are carefully picked. Undisturbed roots may overwinter and re-grow the next May or June in warm winter areas. Seeds are black & purple. Grow Scarlet Emperor up a tall, strong trellis, and it will reach 3m (10′) or higher in no time.
Matures in 75 days. (Open-pollinated seeds)
How to Grow Runner Beans
Check out the blooms on these plants! If planted in a well-drained site, with protection for the roots from frost over the winter, runner beans can be grown as a perennial. Runner beans are botanically different than regular pole beans. They prefer cool summer weather and will drop their blossoms if it gets too hot! They also need more moisture and cool roots all summer. Unlike snap beans, runner beans require pollination by bees to set seed. Fat, slightly fuzzy pods have a richer, beanier flavour than snap green beans. Follow along with this handy How to Grow Runner Beans Guide and you will grow food.
We Recommend: Scarlet Emperor (BN127). Tall to the point of being massive, these vines just keep growing. Starting in mid-summer the plants are festooned in brilliant scarlet flowers – and then come the beans by the bushel.
Season & Zone
Season: Warm season
Direct sow from mid-May to the beginning of July. Try to plant during a warm, dry spell. Soil must be warm – if it is not warm enough, seeds will rot, especially our untreated seeds. Optimal soil temperature: 21-32°C (70-90°F).
Seeds can be started indoors, or sowed directly. Set seeds 7-10cm (3-4″) apart and 3.5cm (1½”) deep at the base of a support. Plants will climb by twining around almost anything. Try rough poles, lumber, re-bar, or build a strong trellis 2-2.5m (6-8′) tall. Seeds will sprout in 8-16 days, depending on soil conditions.
Ideal pH: 6.0-6.5. Well drained, warm soil in full sun is best. Use 1 cup of complete organic fertilizer for every wm (10′) of row. Too much nitrogen fertilizer is often the cause of poor pod set and delayed maturity. If beans flower but do not set pods, the cause can be zinc deficiency. Try spraying the plants with kelp based fertilizer. Wet leaves on crowded plants are subject to diseases. Thin plants to increase air circulation and avoid touching the leaves while they are wet.
Beans can be picked when plump-looking. You may dry beans to preserve them, or cook them soon after harvesting. You must ensure that you cook these beans thoroughly; raw Runner Beans contain “lectin”, a toxin that is removed by the cooking process.
In optimal conditions a tleast 75% of seeds should germinate. Usual seed life: 3 years.
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