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Washing powder can prevent flower pests
Washing powder can be an effective solution for controlling pests on most potted plants. By spraying a 1000-fold diluted detergent solution onto the leaves, you can protect your flowers from red spider mites for approximately two weeks. This method is particularly useful for managing pests on perennial herbs and woody plants. For best results, apply the solution every 3 to 4 days for 2 to 3 consecutive times, which can significantly reduce pest infestations.
In addition, pouring a 1000-times diluted detergent solution around the base of the plant can help prevent root and bulb nematode damage. However, it's important to note that long-term use of washing powder as an insecticide may increase the alkalinity of the soil and potting mix, which could negatively affect the health and growth of your plants.
To counteract this, it’s advisable to occasionally apply acidic fertilizers and regularly repot your plants to maintain a balanced soil pH. This will help prevent the buildup of alkaline conditions in the potting medium, ensuring your plants continue to thrive. Always monitor your plants closely and adjust your pest control methods accordingly for the best results.