What nitrogen-containing fertilizers are there for flowers? Introduction to common nitrogen fertilizer types

Common nitrogen-containing fertilizers for flowers include decomposed rotten vegetables, bean shells, pigeon manure, and eggshells and peanut shells. Nitrogen fertilizer can promote the growth of flower roots, stems, and leaves. Usually, rotten vegetables, bean shells, pigeon manure, and water can be put together into a container for fermentation, and once completed, it can be applied as nitrogen fertilizer. If the flowers prefer acidic soil, an appropriate amount of rice washing water can be added during decomposition.