Tulip Poplar sap and bugs
My tulip poplar has a lot of sap on branches and attracts many bugs. Plus leaves have black spots. Is this something I have to deal with every year? Dave K
Whether the pest problem is a threat to the tree's survival is a question an arborist should answer. If it's a prized tree and you wish to protect it, call an arborist and have them examine it, or take a sample into a local extension or master gardener office. The sap and black spots are sure signs of sucking insects -- aphids and scales, primarily. You could probably spot the pests yourself if you looked closely at the newest growth at the branch tips, in the vicinity of where you see the sap and/or black spots. If so, snip off a sample to take in and show to an expert, see what they recommend. Often, these outbreaks come and go. It may be that you won't need to do much. But it's hard to say not knowing what exactly you are dealing with. Get an expert opinion from someone in your area who's seen the actual pest.
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