Huge Grubs In My Potted Plant

Q: I found two huge grubs in a potted plant. Each one is the length of my index finger and about as big around. The dirt started to undulate when I watered it. 

A: I think you’ve found two formerly happy Hercules beetle grubs. They are commonly found in compost piles. I’m guessing that somehow the eggs survived processing at the potting soil plant. They hatched and grew into the monsters you found. These two would normally pupate and emerge as big Hercules beetles. Good thing they don’t have teeth…they might be awful grumpy after being awakened by cold water going down their necks.

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