What fertilizer should be used for hydroponic flowers, and what should be noted when fertilizing?

Compared with potted plants, hydroponic flowers save labor and effort. Nowadays many friends keep hydroponic flowers and plants at home. Although hydroponic flowers are easy to grow, they still need extra daily attention, such as fertilizing. So how do you deal with the problem of fertilizer damage?

1. Fertilizer selection: There are special nutrient solutions for hydroponic plants on the market. When using them, strictly follow the instructions, and be sure to control the fertilizer concentration. Never apply blindly, otherwise it may cause fertilizer damage. Generally, foliage plants should be given mainly nitrogen fertilizer, supplemented with phosphorus and potassium fertilizer; flowering plants, especially during their flower bud differentiation and flower bud development stages, should be given mainly phosphorus and potassium fertilizer, supplemented with nitrogen fertilizer.

2. Fertilizing time: Hydroponic flowers and plants are generally fertilized in the vigorous growing seasons of spring and autumn, and fertilization is suitable in winter and summer. If plants show poor nutrition in summer that affects their growth, a 0.1% urea solution can be sprayed on the leaves.

3. Fertilizing concentration: Strictly control the fertilization concentration when fertilizing, because all the nutrient elements applied are dissolved in the water. When the concentration reaches a certain level, it will cause fertilizer damage to the flowers, thus affecting their growth and even leading to the death of the whole plant. ① Different flowers require different fertilization concentrations. Flowers such as arrowhead plant (Syngonium podophyllum), mini monstera (Monstera deliciosa 'Borsigiana'), and red emerald philodendron (Philodendron erubescens) are relatively tolerant of fertilizer, so fertilization can be stronger; flowers with fine roots, such as Sihai Bo, Commelina species, Begonia species, and coleus (Coleus scutellarioides), have poor fertilizer tolerance, so fertilization should be lighter. ② For hydroponic flowers, the application concentration should also be determined according to the strength of plant growth vigor. Generally speaking, plants with strong growth vigor have greater fertilizer tolerance, so fertilization can be relatively stronger; otherwise, it should be lighter. When indoor hydroponic flowers are undernourished, fertilization should be stopped or the fertilization concentration should be reduced to avoid fertilizer damage.

4. Handling fertilizer damage: If after fertilizing the flower branches and leaves appear weak and listless, the leaf surface loses its luster, and the root system rots and smells bad, these are signs that fertilizer damage has occurred. Once the above conditions appear, promptly cut off the rotten roots, replace with clean water, and place them in a dark place for care, changing the water once a day, and check the flower roots, promptly cutting off rotten roots, until new roots sprout again, then return to normal care.