I asked this question here a few years ago & was told all is fine but I need to ask again. Why are sooo many white mushrooms popping up in my back yard? As you see from last pic, it’s a long & fairly deep planting bed filled with shrubs, maples, grasses etc. The area is watered by drip irrigation & receives half day of full afternoon sun. This area faces West & is shaded from morning sun by fence & huge firs in property behind. I have been pulling up the shrooms since I don’t want my dog nibbling on them. They pop up along at least a 20’ stretch, the largest are overe 6” across, the smaller look like white button mushrooms. The 2 paniculata hydrangeas are the only thing that gets direct fertilzer. I have mulched around them but not much else. I know mushrooms spread by spores & thought pulling would eliminate them. This year has been a huge crop. The pics are ones I saw today in 3 separate spots. Are they good, bad, or indifferent as far as health of my planting bed?