The air dries out due to low humidity. The plant can’t receive enough water, so the potting soil eventually dries out and causes the roots and green leaves to shrivel.
Orchid potting medium has to be well-draining to remove excess water and provide enough nutrients; if it’s not, root rot and yellow and wilting leaves will appear.
1. Mealybugs: white-colored spots that are sticky to the touch2. Spider mites/aphids: brown spots on the underside of the leaves3. Fungus gnats: tiny brown spots
1. Water when the moss dries out2. Ensure bright indirect light3. New potting mix (perlite, bark, sphagnum moss)4. Apply 20 20 20 fertilizer every 2 weeks5. Remove pests and repot