unwanted mushrooms suddenly growing!?!?

ladybugsmom192(9)May 22, 2010

hi there from the east bay (sf bay area)!

so here's my issue - i'm preparing and conditioning my soil for planting (clay issues) - some hydrangeas, roses trees, azaleas, jasmine, wisteria, etc.. so dear hubby put down a layer of basic organic top soil ("LOCAL HERO" from American Soil & Stone), well here we are exactly two weeks later, and practically overnight i have many, many mushrooms growing right where the concrete patio ends and the dirt begins.

we've lived here for 13 years and have NEVER had this happen before. we do have a few trees in the area where the 'shrooms are - a cute little (young) maple tree, queen palm, and a flowering pear (non fruit bearing). we've had them for at least 7-8 years and planted them ourselves. i've got 2new 3ftx3ftx16in deep raised beds about 15 ft away.

i don't want them in my yard at all, especially where they're growing, so what do you think i should do to get rid of them?

TIA for your help!


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jean001(z8aPortland, OR)

Easy trick: Collect & discard!

Beyond that, they don't hurt or damage anything.

    Bookmark   May 22, 2010 at 10:30PM
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nanelle_gw(9/Sunset 14)

Do they mean something about soil conditions?I have this happen on occasion.

    Bookmark   May 23, 2010 at 12:01AM
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jean001(z8aPortland, OR)

It means that temperature and moisture conditions are correct for the fungus to put up a mushroom. It just happens!

    Bookmark   May 23, 2010 at 2:10AM
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tropical_thought(San Francisco)

It's been very wet, and that make mushrooms grow. Often there is dead woody tree under the ground, that makes them grow.They like to grow on wood, but some like to grow in lawns. They will also grow on fenses if the wood is untreated and getting old, but they only grow on wood that is already rotting. They will also grow in pine tree litter. So, if you really want to get rid of them, collect the growth material, and put that in the green city compost bin. They won't come back. The part you see the fruiting part. The actually plant is underneath the fruit or mushroom part, and very hard to see. They may look like white fibers if you can see them at all.

Here is a link that might be useful: San Francisco Mushroom Society

    Bookmark   May 23, 2010 at 11:46AM
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jean001; tropical thught

@jean001 - thanks for responding!

@tropical thought - wow. everything you've said makes total sense! i'm completely surrounded by pine trees and their needles, and what's more significant - we have several tree stumps buried under the dirt in that very area, and their roots run everywhere! which is why we had to chop them down, the roots were destroying our patio and the fences.... i did love those trees though. i digress... so then i guess i'll just try to dig them up as i don't want them in that area. but they won't hurt anything, right?

thanks again everyone!

    Bookmark   May 23, 2010 at 3:30PM
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jean001(z8aPortland, OR)

That's correct. They won't do anything.

If the stumps/roots were mine, I'd leave them be. Why do unnecessary work? Nature's crew, including that fungus, will get rid of them for you in their own good time.

    Bookmark   May 23, 2010 at 10:28PM
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calistoga_al ca 15 usda 9

My orchard had four stumps from Douglas firs removed when the house was built(the wood was used to build the house). Each stump was about four feet in diameter. Getting rid of them "in their own good time" took almost fifty years. With the hillside location a stump grinder would have been difficult. Al

    Bookmark   May 24, 2010 at 9:12AM
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lisascenic Urban Gardener, Oakland CA

Actually, I consider mushrooms a sign of good soil health.

    Bookmark   May 26, 2010 at 11:12PM
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tropical_thought(San Francisco)

Lady bug Mom, do you mean you will get rid of the mushrooms or of the stump? If you get rid of the stump, you will probably get rid of most of the mushrooms. But, you could get some more mushrooms growing from the roots of the stumps buried under the ground. Sometimes just pine needles can create mushrooms. If you also were to clean up/compost the pine needles if would be better, but that's a lot of work, and pine needles take a long time to compost. Pine needles are good for keeping the weeds down. I would take mushrooms instead of weeds any day. But, I like mushrooms.

Here is a link that might be useful: Mushroom growing in pine needles

    Bookmark   May 29, 2010 at 12:07PM
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hey tropical thought - OH NO! just the mushrooms! because i'm a newbie i had no idea what their appearance meant, was it a good or bad thing, should i be concerned.

thanks to your excellent explanation, i totally get it and have no problem with them.... besides, i love mushrooms too!

    Bookmark   May 31, 2010 at 7:36PM
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hosenemesis(SoCal Sunset 19 USDA 8b)

You just love to LOOK at them, right? Please don't eat mushrooms from your garden.

    Bookmark   May 31, 2010 at 11:49PM
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thanks renee, no, i'd never eat them, lol! thanks to tropical thought, it all makes sense, where they're growing is where the two old trunks are and all they're roots. it happens to be the area i'm planting/prepping for flowers.

    Bookmark   June 1, 2010 at 1:34AM
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You may want to have your soil pH checked. Sounds like your acid level is high and so your soil favors fungus over bacteria. You may need to raise your pH level by dropping down some lime dust. If this is the case you will also enjoy other benfits, like a healthier lawn...

    Bookmark   June 9, 2011 at 5:49PM
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Fungi are decomposers, part of the food web. They are as prevalent as bacteria. They're more common around trees than around annual plants. This is because, as decomposers, they need a lot of food to get their 'roots' into. Those 'roots' are called mycelium, and can stretch for miles! When the mycelium mat is ready, it pushes up mushrooms which spread spores. That's how they reproduce.

You're going to see mushrooms from time to time when the weather is right. They're a natural part of our world. Most are not good for you, so don't touch them with your bare skin. But they're good to have around, because they mean that they're breaking down high-nutrient tough wood into smaller parts, so those parts can enter the food chain and become part of your plant's food. To try to remove the mushrooms entirely would be silly -- you'd have to sterilize your soil and everything that lands on your soil -- and removing their food would take that fertility out of your land.

If I were you, I'd kick the mushrooms over and let them wither back into the soil, not letting kids or dogs step on them. Job done.

Here is a link that might be useful: Paul Stamets: 6 ways mushrooms can save the world

    Bookmark   June 10, 2011 at 10:18AM
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