What to Do About Root Rot in Phalaenopsis Orchids? A Detailed Guide to the Latest Treatment Methods

Phalaenopsis is a member of the orchid family, but it does not belong to the “Chinese orchids”; it is a type of orchid native to tropical rainforest regions. Phalaenopsis blooms are extremely beautiful and it is known as the “Queen of Tropical Orchids””, which is why it is so loved by flower enthusiasts. If such a beautiful pot of flowers were ruined by root rot, it would truly be a pity, but root rot is also a problem that many novice flower enthusiasts often encounter. If it is not handled well, the only option is to throw the plant away, but in fact there are ways to save a plant with root rot. Below, Qinnong.com will introduce to you how to rescue a Phalaenopsis.

I. Causes of Root Rot in Phalaenopsis

There are many causes of root rot in Phalaenopsis, but most of them are caused by the grower not providing adequate care. Qinnong.com has briefly summarized them for you:

1. First, it is caused by poor ventilation of the growing medium and overwatering. If a medium with poor ventilation and poor drainage is used for growing, once too much water is given, it easily accumulates, and the roots are then essentially soaked directly in water, causing the roots to swell and rot;

2. Second is the effect of temperature. Phalaenopsis originally grows in tropical rainforest regions and is not cold-tolerant. The most suitable growing temperature is between 15°C and 20°C, and the winter overwintering temperature must not be lower than 5°C. If the temperature is too low and no warming measures are taken, the roots of the Phalaenopsis will grow poorly, which can also lead to root rot;

3. The last point is also an unavoidable one, which is erosion by pathogens. Phalaenopsis, which grows in tropical rainforests, prefers environments with high temperature and high humidity, but if the temperature and humidity of the environment are very high, it is easy for pathogens to breed. In addition, the application of fertilizer provides an even better growing environment for pathogens, and root rot can also occur when the plant is attacked by pathogens.

II. How to Rescue a Phalaenopsis with Root Rot

1. First, dig the potting soil out of the flower pot and break it apart, wash the plant's roots clean with clear water, then cut off all the rotten roots. The healthy parts should be retained as much as possible, as even damaged roots may still have a chance of being revived.

2. Soak the cut surfaces and the remaining damaged roots in a potassium permanganate solution at 2 percent concentration for about 10 minutes, then let them dry, and carefully smear the cut surfaces once with plant ash. The plant can then be repotted.

3. The potting soil must be disinfected. A simple method is to pour boiling water thoroughly through the potting soil, and reuse it after it cools. When repotting, pat the root crown area firm, water thoroughly, place it in a shaded spot, cover it with a layer of plastic film, and cultivate it at a temperature of around 20°C. After about 20 days, new roots can grow.

III. How to Prevent Root Rot in Phalaenopsis

Now that you know the causes of root rot in Phalaenopsis and the rescue methods, is there a way to prevent root rot in Phalaenopsis? Below, Qinnong.com will introduce the prevention methods to you.

1. Strictly select the growing medium

First, you must be strict when choosing the growing medium. Make sure the soil used for planting Phalaenopsis is loose and breathable. Qinnong.com recommends peat mixed with perlite or peat mixed with pine needles. Of course, you can also choose your own combinations freely, but you must ensure strong breathability so that normal watering will not cause water accumulation.

2. Water reasonably

Once the soil is chosen, you must reasonably control the watering method. Overwatering is the main cause of root rot in Phalaenopsis, and also the primary cause of root rot in most plants, so you must learn to water reasonably. Here at Qinnong.com, we suggest using the “water when dry, stop when wet” watering method, and strictly avoid water accumulation.

The above is Qinnong.com's introduction to the causes of root rot in Phalaenopsis and the treatment methods. We hope it will be helpful to everyone. Qinnong.com has also prepared for you many introductions to Phalaenopsis growing methods, which you can refer to as well. With the correct growing methods, we believe diseases and pests will not easily occur.