I did not see bid mark on the surface of plum.As the plum is still green,I see no worm inside. As the plum is almost turning into purple color,one about 5 mm long worm grows inside near the nut section. This worm shall bid through and comes out. About 70% plum has this worm. How to avoid it ? Plum tree has other kind of green insect that grows hundred on each young green leave. They hide under the leave. I was told this insect was brought by the ant. This insect seems producing some kind of sweet that feed the ant,because I saw many ant climb to the tree at the same time as this green insect starts growing. Some other year,this same insect might turn into black color. How to kill them? They kill most young leave. Same kind of worm and green insect spread to my other cherry tree,and producing the same kind of damages. Some water base insecticide did not work well in Montreal summer time because raining every three day.
2007-01-07
08:51:03
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5 answers
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asked by
bird b
3