Reasons for and solutions to dry, withered orchid leaf tips

Reasons for dry, withered orchid leaf tips:

① Anthracnose, southern blight and round spot disease: spray with 50{bf} carbendazim at 1000 times dilution or 50{bf} captan at 500 times dilution, once every 10 days, for 3-4 consecutive sprays. Scale insects should be removed promptly, and an insecticidal solution can also be used for control. ② In winter, orchids should be kept indoors in a ventilated spot with sunlight; the rule is no direct sun in summer, don't let the soil dry out in autumn, and keep it not moist in winter.

③ Yellow leaves mean a lack of fertilizer, so fertilizer should be applied; black leaves with scorched tips mean too much fertilizer, so fertilizing should be stopped; if a clump has few leaves or poor roots, the flowers should be removed.

④ Promptly cut off dried leaf tips and leaves damaged by pests and diseases.