Jasmine, white orchid, gardenia, sweet-scented osmanthus, Milan, citrus, camellia, azaleas, orchids, and some southern foliage flowers are planted in the north, often with yellowing, falling, and poor growth. This is an acidic or slightly acidic soil in southern China, and the water and soil in the northern part of the country are alkaline.
Flowers and leaves are yellow, people tend to add iron to flowers and trees to make the leaves greener. Black wolfberry (ferrous sulfate) is often used in large quantities. In fact, this method is not good, because it increases the concentration of salt in the soil. Not only does it burn flowers, it also affects the absorption of water by flowers. The right way is to do it yourself.
The method for making pots and fertilizers is to add water with black leeks, manure (powder manure, dried manure), cake fertilizer (cotton seed cake, bean cake, rapeseed cake), and formulate the fermentation in a ratio of 1:3:5:100. Summer time is 1 month (winter takes 3 months). When using, take the clear liquid above, and then water the flowers with more than 95% of the water, apply once every 10-15 days, but stop the application during the flower dormancy period. The better the water is, the better it can be, if it can be stored for more than two years.
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