What to Do When Osmanthus Trees Get Leaf Blight? Detailed Guide to Prevention and Control Methods
What propagation methods are there for osmanthus trees? Please advise, thank you. Osmanthus trees have the following propagation methods: 1. Grafting propagation. The rootstock for grafting osmanthus is generally privet (Ligustrum) or Ligustrum obtusifolium; side grafting or approach grafting is mostly used, and in recent years some have experimented with the tear grafting method. Tear grafting is simple to perform, and the survival rate can reach about 93%. The specific method is: on the spring buds...
What to Do When Osmanthus Trees Get Leaf Blight? Please Advise on MethodsLeaf blight is an important leaf disease of osmanthus, widespread and serious in its damage. Diseased leaves initially show large round or irregular patches, grayish-brown with dark brown edges; later, small black dots form on the lesions and merge with one another, causing large areas of the leaves to dry up. This disease is caused by infection with the fungus Phyllosticta osmanthicola. It generally occurs more on old leaves after overwintering; under conditions of high temperature, high humidity and poor ventilation, when the plant grows weakly, the disease is severe. Prevention and control: (1) Strengthen cultivation management --- apply more organic fertilizer and potassium fertilizer, avoid waterlogging in the soil, so as to promote growth and improve disease resistance. Remove diseased leaves and burn them to reduce sources of infection. (2) Chemical control --- during the disease period, spray 50% carbendazim 1000x solution or 50% benomyl 1500x solution. You can also spray 1:2:200 lime double-strength Bordeaux mixture.
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