On 7/15/2015 10:57 AM, SSF94080 wrote:

I just had my backyard redone and I am attempting to do some
gardening (I live in the SF Bay Area). I hope to be able to get some
help in this group. I had a small patch of grass put down in my cat
enclosure for the cats to go out and play in. If you have cats, you
know that they chew on grass. A few days ago several mushrooms
sprung up in the grass. I am afraid these may be poisonous and
obviously a danger for the cats. I have done some research on the
web on mushrooms in new sod and found a lot of info, but nowhere it
states whether these mushrooms are poisonous or not. They look like
the ones in the picture he
http://www.turfunlimited.com/2014/07...-lawns-health/

I wonder if anyone in this group may know. Thank you in advance!

To be safe, I would remove the visible parts of the mushrooms. You
might have to do this more than once.

What is underground is actually the main part of the fungus. To
permanently remove the main part, buy a small amount of soil sulfur at a
local nursery or hardware store. You should be able to buy a small bag
or a box the size of a cereal box. Scatter a handful sulfur in the area
where you saw the mushrooms and lightly water it to rinse it off of the
grass leaves.

Sulfur is a natural fungicide. Soil bacteria will very gradually
convert it into sulfuric acid, which should kill the underground fungus
without damaging desirable plants.

Can you really use enough water to get a new lawn established without
being penalized by your local water agency?

--
David E. Ross
Climate: California Mediterranean, see
http://www.rossde.com/garden/climate.html
Gardening diary at http://www.rossde.com/garden/diary