Return to the Garden Clinic Forum | Post a Follow-Up

 o
What is this white stuff on mulch and stump?

Posted by amysun 9 Bay Area, CA (My Page) on
Thu, Nov 1, 07 at 15:05

I need help identify what this is. There is white stuff appearing on mulch that surrounds my lemon tree. This area has become hard and compacted. Here's one shot with a second one that is a closer look (the best I can do). About 2 feet away there's a monterey pine tree stump - the tree was cut down a year ago, and now white stuff is appearing on its sides and top. Here are all the pictures. My questions:

1) Do you know what the white stuff is?
2) Are these white stuff related?
3) How to treat it?

We do want to get rid of the stump, but have not had time or resources to do it so we've left it alone for now. - Amy



Follow-Up Postings:

 o
RE: What is this white stuff on mulch and stump?

I have the same thing on the stump of a pine tree we had cut down about 3 weeks ago. The white stuff appeared over night....literally. It wasn't there one day and it was the next. Anyway, I assumed it was fungi that showed up as part of the natural decomposition process and have left it alone to do its thing -- we're getting rid of the stump and the roots in January and I figure I can deal with a little freaky looking fungus til then.

I'm sure somebody here will know specifically what that stuff is, but I really don't think it's doing any harm on your tree stump. The ground around your lemon tree may be a different matter...I don't know what's going on there. Could be from the decomposing roots of the tree stump nearby.

Renee


 o
RE: What is this white stuff on mulch and stump?

You are correct that it is fungus and part of the decompostion process. This fungus will not normally cause problems with other plants in the garden. If you turn the mulch over in another part of the garden after it has been there for a while you will find the samething, part of nature returning the nutrients to the soil.


 o
RE: What is this white stuff on mulch and stump?

Looks a bit like one of the many slime 'mold' species, which are are not fungi (nor molds) at all. They 'move' across many different surfaces, feeding on bits of organic matter as they go. Finding a slime mold on mulch would be typical.


 o
RE: What is this white stuff on mulch and stump?

  • Posted by amysun 9 Bay Area, CA (My Page) on
    Sat, Nov 3, 07 at 10:06

Thank you very much for your responses. Looks like it's relatively harmless. I looked up slime mold on the net, and these look more like vomit and yellowish, and my version looks like neither - it's more like powder that became caked. I'll turn over the mulch this morning and hope for the best.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Garden Clinic Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here