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Vicki from Thomasville, Ga writes

Is it acceptable to use Southern AG Liquid Copper Fungicide on my Japanese Maple?

My small tree is in an area that only receives limited sunlight. I live in south Georgia with high humidity and lichen is a regular problem on most plants. I do not see Japanese Maple listed on the plant list of the fungicide instructions.

Answer:

Per the Southern AG Liquid Copper Fungicide label: Due to the large number of species and varieties of ornamentals and nursery plants, it is impossible to test every one for sensitivity to Liquid Copper Fungicide. Neither the manufacturer nor seller recommends use upon species not listed on the label nor has it been determined that Liquid Copper Fungicide can be safely used on ornamental or nursery plants not listed on this label. Per a Clemson Cooperative Extension article, Lichens occur on plants that are declining in health or vigor. Lichens will eventually disappear if the health of the tree is restored and a control for it is not necessary.

Answer last updated on: 02/12/2019

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