Pollution-free control methods for orchid pests and diseases

   1. Washing powder and detergent: Washing powder can dissolve the waxy coating of scale insects and at the same time form a layer of foam that wraps around the insect body, causing the scale insects to suffocate and die. Washing powder solution can control some pests and diseases. Control method: dissolve a small amount of washing powder in warm water, then dilute with water to a 1000-fold solution and spray the orchid plants; it can kill aphids, whiteflies, and red spider mites. Dilute to a 600-fold solution and spray once every three days for three consecutive sprays, and all the scale insects will die; mix pig bile and clean water at a ratio of 1:100, add a small amount of washing powder, and use it to spray the orchid plants; it can control anthracnose and soft rot. After spraying the orchid plants with washing powder solution, once the pests are dead, the leaves must be rinsed several times with clean water so that the orchid plants can grow normally.

   2. Baijiu: Mix baijiu and water at a ratio of 1:2 and spray the orchid plants once a week for three consecutive sprays; it can kill scale insects.

   3. Citrus peel: Place citrus peel at the bottom of the pot to prevent ants and other pests from entering the potting soil and harming the orchids. Citrus peel can also be cut into small pieces and scattered on the surface of the potting soil; if it is not watered for a few days, it can control aphids, scale insects, and so on.

   4. Plant ash: Soak plant ash and water at a ratio of 1:50 for two days and nights, then filter; use the filtrate to spray the orchid plants. It can both control aphids and increase potassium fertilizer.

   5. Vinegar: Mix vinegar and clean water at a ratio of 1:8, and use it to evenly spray the front and back of orchid leaves; it can control scale insects. If the scale insects have already become adults, the acidity of the mixed solution can be slightly increased, and spraying once every three days for three consecutive sprays can kill the adult scale insects. Spraying vinegar solution on the leaf surface can also eliminate black spot disease, powdery mildew, leaf spot disease, yellowing disease, and so on. Do not use industrial acid vinegar.

   6. Tea seed cake: Tea seed cake contains saponins and glycosides, and its water extract is alkaline, with very good stomach-poison and contact-killing effects on pests. Control method: soak crushed tea seed cake powder and boiling water at a ratio of 1:5 for one day and night, and use it to pour over the orchid pot, while also pouring it over the place where the orchid pots are placed and other orchid pots; it has a good control effect on snails; spraying orchid plants with tea seed cake water has a very good control effect on aphids and red spider mites, reaching more than 90%; tea seed cake water can also kill earthworms. Pour the potting soil thoroughly with tea seed cake water, and after a short while, the earthworms will drill out of the soil surface; pick them out and remove them.

   7. Strong-smelling vegetables (scallions, garlic, chives, ginger, onions, etc.): Strong-smelling vegetables each have their own distinctive odor, and their smell can play a role in killing insects and sterilizing. Control methods: take 25 grams of garlic, crush it and squeeze out the juice, dilute it in 10 liters of water, and immediately spray the orchid plants; it can control aphids, red spider mites, scale insects, and gray mold. Press peeled garlic into small pieces and place them at equal distances on the surface soil of the orchid pot; after a few days, earthworms and ants will disappear; soak chopped scallions and water at a ratio of 1:30 for one day and night, then filter, and use the liquid to spray the orchid plants several times a day for several consecutive days; it has good effects on controlling aphids, soft-bodied pests, and powdery mildew, etc.; take 1 jin of ginger, add half a jin of water, mash and extract the juice, add 6 jin of water to each jin of juice, and spray the orchid plants; it can control aphids; mix chive juice and clean water at a ratio of 1:60 and use it to spray the orchid plants twice a day for several days; it can cure black spot disease; take 15 grams of chopped onion bulbs, place them in 2 jin of water, seal and soak for 7 hours, then filter, and use the filtrate to spray the orchid plants; it can control red spider mites and aphids.

   8. Cigarette butts: Tobacco leaves contain about 3% nicotine. Nicotine has a strong contact-killing and stomach-poison effect on pests. Take about 20 smoked cigarette butts and one portion of quicklime, add water, stir, soak, and filter, then add 30 portions of water, and use it to spray the orchid plants, potting soil, and the bottom of the pot; it can eliminate ants and other pests without a waxy coating on their bodies.

   9. Mix powdered brown sugar and boiling water at a ratio of 1:100; after it cools, use the brown sugar liquid to spray the orchid plants once every 3 days for three consecutive sprays; it has a relatively good effect on controlling downy mildew, powdery mildew, black spot disease, and leaf blight.

  10. Diesel: Mix diesel and water at a ratio of 1:60 into an emulsion, then dilute it with 100 times water and spray the orchid plants; it can control scale insects, etc.