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« on: April 16, 2014, 09:55:00 PM »
My 20+ year old grapefruit was completely defoliated by this years Winter. It has sent out quite a bit of new sprouts and clearly was on the road to recovery when I discovered hundreds of frass piles on the trunk and limbs. After removing the frass I discovered a small, size of a pinhead, hole. I have not seen any bugs. Ambrosia beetles are not supposed to attack Citrus. I am very worried about this and I am considering using Spinosad, Imidacloprid and Summer oil. I wlll not see any fruit this year and the tree is about twenty five feet tall with a twenty foot spead. It grows through my deck and the lowest limbs are at about seven feet (from deck) and are huge (8"-10").
What are your thoughts?