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how do i treat lichen on magnolia




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You don't need to, its' not harmful, but if you don't like the look of it, gently clean it off.

1 Jun, 2010

 

Why do you want to treat it? Lichen is a sign of clean air and does no harm to the plant. However, it could be a sign that the canopy is not thick enough and the tree isn't growing very strongly. Feed it with an ericaceous plant food.

1 Jun, 2010

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