Detect a mite problem. If your orchid is infested with mites, you’ll see yellow or brown spots on the leaves. You may also see tiny webs created by the spider mites.
Isolate the infested orchid plant from your other orchids and plants. Mites can travel easily and quickly from one orchid to another.
Spray and rinse your orchid with water. Wipe the leaves, including the undersides, with a cloth moistened with water and dishwashing soap.
Spray rubbing alcohol mixed with a few drops of dishwashing liquid on the orchid leaves, if you have a more severe or persistent mite infestation. Spray the orchid’s leaves once per week for three to four weeks.
Apply neem oil to the leaves in the evenings by rubbing it on with a soft cloth. Make sure the neem oil has enough time during the night to kill the spider mites without any direct sunlight on the orchid plant.