Hi,
Last couple of years, our weeping cherry foliage is eaten by caterpillars that I think are winter moths. They completely eat it and new leaves grow which dont look as nice, but by that time the caterpillars are gone, so the tree doesnt look that bad by end of May.
This year I am going to try to battle these critters. I was thinking that I will spray hort oil to kill some eggs and then spray BT once leaves are out. Right now there are very small buds on the tree branches. Is this a good time to spray hort oil? Last year the moths hatched around 2nd week of April (based on what google found out). Any particular recommendation for the hort oil?
My maples have the same problem too .. but those are tall trees, so I wont be trying to fix those.
This is where I am getting my information from.
tree_oracle
diggingthedirt
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