The Q&A Archives: Excessive Red Wiggler Worms

Question: What used to be a back lawn is now completely sand caused by an excessive amount of red wiggler worms. After eating all the grass they have moved into the front lawn and are starting to decimate this area.

I tried diazinon but do not want to use this as I have pets and a nearby 10 acre lake. I am DESPERATE to control the population of these worms. Any help would be greatly appreciated!!!!

Answer: The worms you have are most likely not red wigglers, one of the worms sold for fishing, but another smaller species which has become quite a nuisance in the south. Their high populations and vigorous activity leave turf runners covered with their casting piles leading to decline of the lawn.

No pesticides are currently labeled for earthworm control in turf. These worms tend to come and go through the seasons and usually become less of a problem over time. Washing the castings off the turf with water after a periods of high worm activity will help reduce the damage to your lawn.

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