Q. What are those large grubs that live around the edge of the compost pile? Are they a threat to plants or gardeners?

A. Those are the rhinoceros beetle grubs. It is a beneficial beetle that apparently feeds on other insects. The grubs help decompose the organic material in your compost pile. Treat the grubs well. Let them live and mature.

Calvin Finch is a retired horticulture agent in Bexar County. He writes for and works with a number of area media outlets.

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