Return to the California Gardening Forum | Post a Follow-Up

 o
Bugs destroying peach tree

Posted by shauninsf (My Page) on
Sat, Apr 18, 09 at 18:03

We have a small peach tree in our yard. Last year was fine and produced lots of great fruit. This year its COVERED in some weird, small (about the size of a pea) orange with black spot insects. I say insects, they are almost like snails, they don't seem to be moving at all but are on the actual branches in groups of maybe 10 or 20, all over the tree. At first they looked like some kind of ladybug. Maybe they aren't even insects but some kind of fungal growth? We admit to knowing very little about trees and gardening :)

The leaves are starting to blister and turn red too. We saw the same thing on a neighbors tree so I guess its common around here (San Francisco bay area).

Can anyone tell us what these are and how to get rid of them?

Heres some pics:

'Bugs':
http://s14.photobucket.com/albums/a335/retroshaun/bugs/?action=view¤t=DSC05540.jpg

Leaves:
http://s14.photobucket.com/albums/a335/retroshaun/bugs/?action=view¤t=DSC05538.jpg


Follow-Up Postings:

 o
RE: Bugs destroying peach tree

Your Photobucket links don't work.

But it sounds to me as if you have the beginnings of a bad case of peach leaf curl.

Joe


 o
RE: Bugs destroying peach tree

Joe: the bugs look like brown scale on steroids. Try C&Ping the links directly into the address box.


 o
RE: Bugs destroying peach tree

  • Posted by jean001 z8aPortland, OR (My Page) on
    Sun, Apr 19, 09 at 0:41

When one C&Ps them directly into the address box, one gets this message
"The action that you were trying to perform has failed."

So, the glitch is how you have them linked.

Please try again w/the images.


 o
RE: Bugs destroying peach tree

Sorry... pics again:

http://i14.photobucket.com/albums/a335/retroshaun/bugs/DSC05538.jpg

http://i14.photobucket.com/albums/a335/retroshaun/bugs/DSC05540.jpg


 o
RE: Bugs destroying peach tree

BUMP! Any ideas what this is and how to cure?


 o
RE: Bugs destroying peach tree

  • Posted by jim123 z9 or z10 CA (My Page) on
    Sun, Apr 19, 09 at 17:47

The leaf damage is Peach Leaf Curl and it is caused by a fungus. It is too late to do anything about it this year. It will somewhat impede growth this year, as energy has been spent on producing leaves that it will not keep long enough to restore what they used. The affected leaves will eventually fall off (or you can pull them off) and others will grow. The tree will live, just not a vigorously as it would have.

The cure is to spray for peach leaf curl before the tree has leafed out. You need to spray while they are dormant. It needs to be sprayed two or three times during the winter, the very latest just before bud break. If it rains within a day or two, it doesn't count. I use light oil that contains fixed copper. Malathion can be added if you desire.

As for the bugs, I can't see them clearly enough. I think they look like bean beetles. Been beetles resemble lady bugs, but with black dots. Lady bugs are friendly. Bean beetles are not. They eat leaves. You probably need to spray for them, but you need to choose something that can be used on a leafed out plant.


 o
RE: Bugs destroying peach tree

  • Posted by jean001 z8aPortland, OR (My Page) on
    Sun, Apr 19, 09 at 18:16

More about the peach leaf curl

To minimize the disease in subsequent years, discard all affected leaves, including those that drop on their own. If left to their own devices, the fungus continues its life cycle on the fallen leaves and is right there, under the tree, easily able to reinfect the tree.

That said, yes you should also apply a dormant spray as previously described.

As for the bumps, they do look like beetles. If so, you should be able to pry them off easily. Could well be lady beetles. The Asian lady beetles overwinter in the same regions that they live during the growing season.

Don't know what bean beetles would be doing on a peach tree, especially in those numbers.


 o
RE: Bugs destroying peach tree -- more

  • Posted by jean001 z8aPortland, OR (My Page) on
    Sun, Apr 19, 09 at 18:18

Neglected to add that those bumps might be scale. In that case, when you pry it off, the underside won't show any legs.

If so, start squishing, now, before the very tiny young hatch and start to move around. Then remain alert after that.


 o
RE: Bugs destroying peach tree

  • Posted by hoovb z9 Southern CA (My Page) on
    Sun, Apr 19, 09 at 18:37

Here's the pictures. You should be able to mouse over your pictures at photobucket and copy the "html code" and paste them into your messages. Sorry about your peach tree. :(


 o
RE: Bugs destroying peach tree

I just noticed that my white peach tree in Almaden, San Jose has the exact same things on the branches. It must be the time of year. Did anyone identify exactly what these ladybug-looking... scales... are? and whether they need to be dealt with or just left alone and it goes away? I also have peach leaf curl this year and did not spray earlier... probably too late to do anything for it this year.


 o
RE: Bugs destroying peach tree

  • Posted by jean001 z8aPortland, OR (My Page) on
    Sun, Apr 25, 10 at 20:24

Changed my mind about the possible lady beetles.

Most likely lecanium scale. If so, should be sort of stuck to the branch but you can lift them off with a fingernail.

If I'm correct, obliterate all you can find.

If the tree is too large to get to overall, find out when the crawlers will be hatch in your climate & use an appropriate spray at that time.


 o
RE: Bugs destroying peach tree

Oh, man! I have these things too and I've been trying to figure out what they are. I posted a pic on Garden Web but no one responded. Is there any chance that they are lady bug larvae or eggs? I noticed mine are all placed next door to some scales so if they are lady bugs, they could have been placed there to have a ready food supply right?

I don't want to destroy them if they're lady bugs. I noticed they come off easily and have a little gummy stuff on the bottom that I presume keeps them attached.

Does anyone know for sure??

Here's my pic: http://farm4.static.flickr.com/3658/4563995326_26128a8360_b.jpg


 o
RE: Bugs destroying peach tree

Destroy them or they will destroy your plant/tree. I found them on an iochroma and you could see the plant was starting to weaken. Don't know what they are but will google lecanium scale, but I do know they are not lady bugs or their lavae. I got a paper towel and just ran it up and down the stem squishing all I could. Then I took some alcohol and went over what remained plus did trim the iochroma. So far so good.


 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 California Gardening 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.
  • Please review our Rules of Play before posting.
  • 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