四角豆
Psophocarpus tetragonolobus
植物簡介
Herbaceous climber that grows 3 - 4 m in height. Leaves green and trifoliate (compound leaves each consisting of 3 leaflets). Leaflets large (8 – 15 cm long, 8 - 15 cm wide at the broadest point) and ovate (lateral leaflets) or deltoid (terminal leaflet). Pea-like flowers classified as papilionaceous are usually light blue, but occasionally white (2.5 - 3.5 cm wide). Fruits are elongated pods (15 - 30 cm long, 3 cm wide) and square or rectangular in cross-section. Frilly or sometimes smooth wings protrude along the length of the pod at each corner. At maturity, pods break open to release 5 - 21 approximately round, smooth seeds.
生長條件
全日照
壤土、排水良好
濕潤排水良好
南部適種
H1a｜熱帶植物
3 公尺 至 7 公尺
冠幅 —
照顧指南
Plant grows well in hot, humid environments with high rainfall. Sensitive to frost. Tolerates various types of soils, but does not grow well in soils that are waterlogged. Allow 50 cm of space between plants. Although it receives nutrients through its symbiotic relationship with nitrogen-fixing bacteria, you can fertilize with manure to maximize growth. Stake the plant or use a trellis to maximize fruit production. Requires a photoperiod (duration of daylength) of less than 12 hours to flower. Growth is initially slow when young (0 - 6 weeks), so weed carefully during this growth stage. Begin harvesting the fruits 10-12 weeks after planting. This species is susceptible to false rust, dark leaf-spot, root knot nematodes and various insects pests (eg., Maruca testulalis , Mylabris afzelli , Mylabris pustulata , Heliothis armigera and Icerya purchasi ).
Pruning group 12 (Moderate climber) — 基於植物形態自動推斷，非 RHS 官方分類。 中等攀緣植物，花後輕剪整形。 熱帶環境下無明顯休眠期，全年皆可進行修剪。
Seed
Chewing Insects
適合場景
延伸閱讀
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