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Those Japanese beetles played hell on our arborvitae's the past 2 summers before this one.
We had a couple mini heat waves so they're saying the beetles had to burrow deeper to escape the heat basically ruining whatever they were in.
Also, when I planted the Maple in back my neighbor was having some fencework done so I asked him to bribe one of the workers to bore down with their fence post digger where I was planting. I didn't even really dig a hole, just sat the base of it on top of those holes & mounded it.
Up here it's best to mound them since where we're at the soil is full of clay. PUt it this way, when I put in sprinklers I had to use a pic ax to dig the trenches. Broke about 3-4 of the skinny little shovels before giving up.
My wife & I planted 6 of the arbies, short, tall, short, tall..... We built one long ditch (hole) for them thinking we were doing the right thing since there wouldn't be any sitting water with any one treee. Well, there's only one left. Should have have mounded them more. The one left is on the farthest low end.
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