Q.butterfly bush
I have discovered that my butterfly bush is covered with leaves that have folded outward in half with extreme curling. There are a few leaves that are starting to turn yellow. I have had this bush, which has actually become a tree for more than eight yrs. I have no clue what is wrong with it and don’t want it to die. Thank you kim
Downtoearthdigs
Answered on June 5, 2017
Inspect your plant for signs of pests and treat with Neem Oil.
Cupping leaves can also be caused by exposure to a herbicide.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/plant-problems/environmental/herbicide-plant-damage.htm
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