What fertilizer concentration is suitable for Phalaenopsis orchids? You should know the harm of over-fertilizing

The Phalaenopsis orchid, known as the aristocrat among orchids, draws people's attention with its elegant bearing and unique flowers. However, to keep this "aristocrat" in its noble and charming state, fertilizing in spring and summer is especially important. During these two seasons, Phalaenopsis grows vigorously, and its demand for nutrients increases accordingly, but over-fertilizing may backfire. So what should you pay attention to among the key points of fertilizing Phalaenopsis? Let's take a look together below.

The most important thing in growing flowers and plants is of course fertilizing, especially during the peak growing season of Phalaenopsis (in spring and summer). Proper fertilizing is equal to boosting its immunity and nutrients, and can promote stem and leaf growth and flowering. However, some flower growers fail to adjust the fertilizer concentration properly, causing an imbalance in soil pH, resulting in excess nutrients that cannot be absorbed. This generally shows up as stunted growth, yellowing leaves, and even root rot. Therefore, it is recommended that beginner flower growers choose slow-release organic fertilizer, as this can continuously release nutrients while reducing the risk of over-fertilizing.

In addition, the amount of fertilizer for Phalaenopsis also needs to be determined according to the actual condition of the soil. Flower growers can use a soil test kit to measure the soil's pH value and nutrient content. If the soil is already quite rich and fertilizer is applied excessively, it may cause root burn or other problems. If the soil nutrients are too low, then fertilizers containing major nutrient elements such as nitrogen, phosphorus and potassium should be added. In addition, during the winter dormancy period, fertilizing should be reduced or stopped.

When fertilizing Phalaenopsis, it is recommended to spread the fertilizer evenly around the plant and then gently cover it with soil. At the same time, you can also follow the ratio in the instructions and gently pour it along the edge of the orchid pot, trying to avoid direct contact with the roots. This operation can prevent excessively high fertilizer concentration from burning the roots and allow nutrients to gradually penetrate with water to places where the root system can absorb them.

In summary, when fertilizing Phalaenopsis in spring and summer, flower growers are advised to choose slow-release organic fertilizer. During the fertilizing process, the amount and concentration of fertilizer need to be adjusted according to the soil nutrient condition, so as to avoid the adverse effects of over-fertilizing.