Which Plants Should Not Be Watered with Rice Washing Water
Watering plants with rice washing water is a common household gardening technique, but not all plants can enjoy this natural fertilizer. Mastering the correct scenarios for using rice washing water can prevent accidental harm to plants and provide adequate nutrients for acid-loving plants like Cymbidium. This article will delve into the boundaries of using rice washing water and focus on special precautions for caring for Cymbidium.
Plants That Are Forbidden to Use Rice Washing Water
List of Alkaline-Loving Plants
Common garden flowers like hibiscus and Chinese roses have strict requirements for soil pH levels, and fruit trees and ornamental plants like pomegranates and Chinese pink also need a neutral to slightly alkaline environment. Cacti and succulents store water more easily in alkaline substrates, while the root systems of pine and cypress needle plants are particularly sensitive to acidic substances. Misusing rice washing water can cause leaf yellowing and root rot.
Complete Guide to Watering Cymbidium with Rice Washing Water
Scientific Basis for Appropriate Use
Cymbidium, as a typical terrestrial orchid, grows best in a slightly acidic substrate with a pH of 5.5-6.5. The organic acids formed after fermenting rice washing water can continuously adjust the soil pH, and the starch decomposition products and trace elements contained can promote the enlargement of pseudobulbs. Experimental data shows that reasonable use can increase the number of Cymbidium flower spikes by 30%.
Three Key Elements of Operation
1. Fermentation Process: Fill a sealed container to 70% full, add orange peel to reduce odor, complete the decomposition in 5-7 days in summer, and extend to 15 days in winter. 2. Application Cycle: Dilute with water (1:3) every 15 days during the growing season, pause watering during high-temperature dormancy. 3. Precise Watering: Use a spouted pot to slowly seep along the edge of the pot to avoid water accumulation in the leaf center that can cause soft rot disease.
Mastering these techniques can make Cymbidium leaves glossy and thick, ensuring the stable sprouting of new buds every year. Pay attention to the plant's response, and if tip burning occurs, stop using immediately and replace the growing medium.