What can I do to get rid of mushrooms growing in my yard?

Answer 1

Lawn fungi
The evidence you see is the reproductive or fruiting body of the fungi. Remove it as soon as it appears to prevent the spores being released. This keeps them away from pets or children who might sample a poisonous one. The difficulty is they probably blew in from a fair distance and will reappear. They will not cause grass disease so they are more a risk to children or pets and then only if harmful.
When you pull the fruiting body there are mycelium still in the soil there. When they have regrown and if the soil is wet enough they may refruit. You will have to watch this patch.
If the fungi are growing in a ring they may be 'Fairy Ring fungi. All varieties of grass are susceptible to this and there are several fungi species that produce the rings. The rings serve to stimulate the grass caused by the release of plant nutrients as the fungal hyphae decompose organic matter in the soil. Later if the fungus becomes very old it may crowd the grass out of the inside of the ring. This is what lead to the belief fairies danced there beating down the grass inside their dance area.

Increase the fertilizer to grow the rest of your lawn as quickly so the ring is hidden with equal grass growth. (Try Hasta-gro 12-4-8 liquid lawn food.) Mushrooms grow on carbon rich decaying matter like wood. They in turn supply nitrogen to the plants. grass is a nitrogen hog. Give the grass the nitrogen it wants and it will probably out compete the fungi.

Another reason for fungi in lawns is buried wood for them to grow on. Buried scraps of construction lumber, dead tree roots, or other organic matter can support fungi until the decomposition is complete. Again remove them by picking or by digging up what they are growing on. You can sometimes eliminate mushrooms growing from buried organic matter by applying a nitrogen heavy fertilizer but you certainly can by removing their food source.
The best thing to do is aerate the soil, measure the water you apply so the soil isn't to wet, and keep the thatch cleaned out. Set out rain gauges on your lawn and see how much water you actually put on the lawn in your usual watering method. It is likely there are regions receiving too much water.
Mushrooms suggest a healthy garden. They indicate an active recycling of the mulch into soil. The breakdown of mulch is the same as decay in the forest of leaves and other fallen debris. This cycles back into soil and is available to the plants again. Fungi are active both in the decay and in symbiosis with your plants.
Certain mushrooms form a mutually beneficial relationship with the roots of plants, ranging from trees to grasses. Plants with fungal partners can also resist diseases far better than those without.

If you are worried about the mushroom you can ID it here.
http://www.nmmastergardeners.org/Fungi%20pages/Mushroom%20ID.htm
http://tomvolkfungi.net/
http://www.fungaljungal.org/key/key.html
http://www.capsandstems.com/id.htm

Answer 2

They are a result of over watering. Best thing to do is lay off on the watering and they will go away..for free

Answer 3

man, wish i knew.... our lawn is lousy with them!! We just pull them out and it seems like they are back the very next day double. We even have a lawn company come out and spray for weeds and those little buggers make it thru that!

Answer 4

sell them or smoke them
that always works.