Scarlet Runner Bean (Phaseolus coccineus)

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Sunlight Full sun to partial shade; requires at least 6 hours of direct sun for optimal flowering and pod development

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Watering Keep soil consistently moist but not waterlogged; avoid drying out during peak flowering and pod production

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Temperature Thrives in 18–25°C; tolerates light frost but growth slows below 10°C; protect from extreme heat above 32°C

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Leaf: Trifoliate compound leaves with ovate leaflets, glossy green, 5–15 cm long
Flower: Clusters of bright scarlet, pea-like blooms; white or pink cultivars are available
Stem: Slender, twining stems with tendrils for climbing support

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Watering

Keep soil evenly moist; water deeply 2–3 times weekly

Fertilization

Apply balanced organic fertilizer at planting. Avoid high-nitrogen fertilizers which prioritize foliage growth over flowering and pod production

Composted banana peel tea：Steep fully composted banana peels in water for 24 hours; dilute 1:20 with water for root drench to avoid nutrient burn

Pruning

Pinch back growing tips when vines reach 30 cm to encourage bushier growth and more flower clusters
Remove spent flower clusters to prolong the flowering period and redirect energy to pod development
Trim dead or damaged vines to improve airflow and reduce disease risk
Cut back vines to ground level after first frost in cool climates to prepare for overwintering or removal

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no known adverse effects from ingestion

Humans: Non-toxic to humans; edible pods and flowers are safe for consumption when cooked

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Culture: Symbolizes vitality and agricultural abundance in traditional Mesoamerican cultures

Usage: Ornamental climbing vine for trellises; edible pods and flowers used in savory culinary dishes