I don't know how persistent opossums are but I put bird netting over my raspberries and it seems to keep the critters out. I pounded posts into the 4 corners of my raised bed and draped the netting over that.
I have finally had it with Magpies and other birds eating my strawberries, this is my second/third year growing strawberries and I get very few berries because of the birds eating them once they start to turn color. Hubby was told to use a owl by co-workers, we picked one up today after I had tossed another 21 berries over the fence and harvested just a handful. I have it in the strawberry patch right now, but I will probably move it around everytime I go water the garden.
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