Ask a Question forum: Bug Mounds

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Name: China
Woodbridge, VA (Zone 7a)
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chinwa3
Apr 1, 2018 9:34 AM CST
Can anyone tell me what these are? They started out as a small area in one corner of my yard but have spread to cover half the yard within a week. I'm in Northern VA right outside of DC.
Thumb of 2018-04-01/chinwa3/af3eae

Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Apr 1, 2018 9:37 AM CST
Earthworm castings.
Good for soil !👍👍👍
😎😎😎
Anything i say, could be misrepresented, or wrong.
Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
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porkpal
Apr 1, 2018 9:38 AM CST
They look like crayfish chimneys to me. Is it a damp area?
Porkpal
Name: China
Woodbridge, VA (Zone 7a)
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chinwa3
Apr 1, 2018 9:40 AM CST
Thanks for the info, and quick reply! I have a grub problem every year so I was going to put down some Grub-Ex today. Is this a good idea if the earthworm castings are good for the soil?
Name: Lin
Florida Zone 9b, 10a

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
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plantladylin
Apr 1, 2018 9:42 AM CST
My guess is that it is a miner bee or some sort of wasp nests.
~ Playing in the dirt is my therapy ... and I'm in therapy a lot! ~


Name: Lin
Florida Zone 9b, 10a

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
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plantladylin
Apr 1, 2018 9:51 AM CST
Many bees nest in the ground: https://www.ces.ncsu.edu/depts...

Images of nest mound entrances:
https://www.bing.com/images/se...
https://www.bing.com/images/se...

Cicada wasps nest in the ground too; last year we had many sand Cicada wasps and mounds all over our lawn but their entrance holes are larger than the ones that ground bees make.
~ Playing in the dirt is my therapy ... and I'm in therapy a lot! ~


Name: Sue Taylor
Northumberland, UK
Charter ATP Member Bookworm Amaryllis Houseplants Annuals Garden Photography
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kniphofia
Apr 1, 2018 10:02 AM CST
Worm casts for me as well. Think carefully before you put anything in the area as there are lots of beneficial insects etc in your lawn as well as some pests.
Name: China
Woodbridge, VA (Zone 7a)
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chinwa3
Apr 1, 2018 10:35 AM CST
Thanks all for the replies; I appreciate it.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Apr 1, 2018 11:21 AM CST
I believe they are ant hills. Note the hole in the middle of the mounds and compare with these pictures:

http://extensionpublications.u...
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
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plantmanager
Apr 1, 2018 11:26 AM CST
We've had holes like those on our land. They were ants, but I'm not sure which species they are.
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