Causes and Control measures of Leaf Tip dryness of Orchid

Potted orchids often experience leaf tip withering, or even whole leaf wilt, mainly caused by orchid anthracnose and round spot disease, which occurs in large quantities during the plum rain season or at the turn of summer and autumn. 5Q% carbendazim 1000 times or 50% carbendazim 500 times solution can be sprayed in the disease-prone period, once every 10 days, for prevention. Families can buy small packages of sterilized pesticides and use them according to the instructions.

When the orchid theory is damaged by frost or late frost, it is also easy to form leaf tip drying or discoloration. Therefore, in areas where the winter temperature is below 0 ℃, orchids should be moved to indoor ventilated and sunny places for maintenance before winter. When moving outdoors in spring, we should pay attention to avoid the harm of late dew. Traditional experience: spring is not windy (spring should not be moved outside too early to avoid strong winds), summer is not a day (summer should be properly shaded to prevent hot sun exposure), autumn is not dry (autumn should be often watered to prevent drought), winter is not wet (basin soil can not be too wet in winter to prevent freezing and rotting roots). This is of great benefit in preventing the orchid leaves from drying up.

If the orchid leaves that have been withered at the tip of the leaf are not too serious, the method of manual cutting can also be used, using scissors (preferably sterilized by alcohol) according to the "tip" shape at about 10 mm below the dry part, which can still be kept full of green. It would be better to spray the above-mentioned fungicide after pruning. (Xue Yong)