Garden Pest Problem
I'm new to this forum, and I'm hoping ya'll can help me. I lost two trees this year to carpenter ants and now I'm having some trouble in my garden too. I planted a sky pencil holly and an azalea at the corner of my garden. They were both doing great and then both died suddenly, even with watering. This afternoon I pulled up the dead azalea and found all these bugs crawling around in the soil. I saw beetles, ants and a brown bug that I can't identify. It looks like a brown beetle, no wings. I'm rather new to gardening, so I don't know what is normal to have crawling around on the roots of plants and in the soil.
I plan on taking a soil sample to OSU to have it tested and I also poured some diatomaceous earth into the ground where the azalea was.
Any suggestions or advice?