How to Treat Black Spot Disease in Orchids? Practical Control Methods Shared
Orchids are plants whose "foliage is more worth viewing than the flowers." When an orchid is infected with black spot disease, the best way to cure it completely is to remove the diseased leaves, but this reduces the ornamental and economic value of the orchid (especially rare varieties). The following three methods can effectively cure black spot disease in orchids without removing the diseased leaves. Gentian violet method: when you find an orchid suffering from black...
Orchids are plants whose "foliage is more worth viewing than the flowers." When an orchid is infected with black spot disease, the best way to cure it completely is to remove the diseased leaves, but this reduces the ornamental and economic value of the orchid (especially rare varieties). The following three methods can effectively cure black spot disease in orchids without removing the diseased leaves.
Gentian violet method: after discovering that an orchid has black spot disease, immediately wipe the affected area with gentian violet (apply the medicine over a slightly larger area than the spot). The spot will no longer expand and can heal within a few days, thus preserving the leaves. If you do not use gentian violet, a saturated potassium permanganate solution is equally effective.
Vinegar method: spraying edible vinegar on the leaf surface of flowers can eliminate black spot disease, powdery mildew and leaf spot disease, and can also prevent and treat chlorosis in camellias and rhododendrons.
Chive method: soak chive leaves in clean water for 24 hours, usually with a chive-to-water ratio of 1:10. Watering flowers with the water used to soak chives can prevent black spot disease and powdery mildew, and can reduce the severity of disease in flowers already infected. Spraying the water used to soak chives onto the leaf surface of diseased flowers can also cure the condition.