If you've ever kept plants at home, you know that most plants will, to some extent, attract small insects or spiders. This could be due to improper care or the growth of bacteria in the environment, or it could be that your neighbors have too many plants, and the insects unintentionally fly over. The most frustrating thing about these pests is that once they invade, they don't leave, and like vampires, they suck the nutrients from your plants.
Phalaenopsis orchids typically cost between 50-80 RMB each in the flower market. If these insects target your orchid and the plant’s condition worsens, it can be hard to bear, especially since you’ve spent money and want to enjoy beautiful blooms. When it comes to pests on Phalaenopsis, the main culprit is the red spider mite. This pest is particularly destructive, often hiding on the underside of leaves and clustering in the gaps between leaf veins. Using needle-like mouthparts, it pierces the leaves and sucks out the sap. Initially, you’ll notice small white spots on the leaves, which later turn into brown patches, resembling "pockmarks." Eventually, the leaves will dry up and fall off. Red spider mites reproduce extremely quickly, and when temperatures rise, they can multiply rapidly.
So, what should you do if you find red spider mites on your Phalaenopsis orchid? First, isolate the plant. Even if there are only a few mites, move the orchid away from your other plants. Red spider mites can spread quickly, and within a day or two, they could infest your other plants. Once isolated, gently rinse the underside of the leaves with clean water to wash off some of the adult mites and eggs.
Next, use a pesticide. Target the hatching period of the mites. Since the larvae have soft shells, you can dilute the pesticide to a 2000x concentration as specified on the instructions. Be sure to spray the underside of the leaves thoroughly, leaving no spots untreated. After spraying, wait 5-7 days and spray again. Repeat this 2-3 times to completely eliminate the larvae and eggs.
Finally, when spraying the pesticide, always wear protective gear such as gloves and a mask to prevent the chemicals from contacting your skin or eyes. After spraying, wash your hands thoroughly with soap, and place the plant in a well-ventilated outdoor area to avoid inhaling the pesticide fumes.
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