millions of white somethings on bark of weeping cherry

joy_divisionSeptember 5, 2011

I was going to some pruning and noticed the underside branches were all dead. Then I noticed the entire branches were white. Millions upon millions (no exaggeration) covered the branches completely around. There were not on the leaves at all, only the bark.

They were smaller than a pencil point. Searching google didn't help me.

What are they and how do I get rid of them?

Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

Pictures would be helpful...or at the very least a much better description. What do they look like, do they move, can you rub them off, etc.?

    Bookmark   September 6, 2011 at 4:33AM
Thank you for reporting this comment. Undo
Kimmsr(4a/5b-MI)

Tree branches seldom die only on the underside. This "white stuff" may be lichen spores.

Here is a link that might be useful: Lichens

    Bookmark   September 6, 2011 at 7:13AM
Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

I read that to mean that the lower branches were all dead...the inside of this weeping tree can be very dense and the older, inside branches can die. In other words, not the 'underside OF the branches', but the underside (inside) branches.

Maybe Joy will get back to us with some pictures or a description.

    Bookmark   September 6, 2011 at 11:24AM
Thank you for reporting this comment. Undo
jean001a(Portland OR 7b)

Must have pictures

How to post them
http://forums.gardenweb.com/forums/load/hosta/msg0513322013993.html?14

Here is a link that might be useful: how to post images

    Bookmark   September 6, 2011 at 1:33PM
Thank you for reporting this comment. Undo
joy_division

Sorry, here is more. Pictures I do not have as they are so small it only comes out as white paint.

I can scrape them off, yes. They do not move. They don't just wipe off though; it does take some "elbow grease."

Lower branches were never dead before. This tree is like a weed. I trim it back and within a week, a foot of new growth has appeared in many places. It doesn't grow up, it grows across.

Anyway, back to these "things." Like I said, pencil point at best. It's like the bark is painted white. Total coverage, from 2 inch thick branches to little twigs.

I am going to look up lichen spores right now.

    Bookmark   September 6, 2011 at 7:53PM
Thank you for reporting this comment. Undo
joy_division

definitely not lichen spores. From a distance, like I said,m looks like the branches are painted white. Must get within a few inches to see it covered in immobile white pencil points. I'll try and work some photography magic.

    Bookmark   September 6, 2011 at 7:55PM
Thank you for reporting this comment. Undo
hortster(6a, southcentral KS)

Lacking pictures, you might compare to white peach scale (also attacks cherry).
hortster

    Bookmark   September 7, 2011 at 10:05AM
Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

I've been thinking peach scale, too, hortster, but without more of a description....

Peach scale doesn't really fit what little bit we know, but at least we know that it can totally cover branches.

    Bookmark   September 7, 2011 at 1:06PM
Thank you for reporting this comment. Undo
joy_division

definitely not lichen spores. From a distance, like I said,m looks like the branches are painted white. Must get within a few inches to see it covered in immobile white pencil points. I'll try and work some photography magic.

    Bookmark   September 7, 2011 at 5:04PM
Thank you for reporting this comment. Undo
joy_division

ok, here's the pic. Don't know if it's helpful enough, but it's more helpful than no picture. I scraped of 99% of the 'stuff.'

http://gsa.freeshell.org/IMG_1073.jpg

For some reason, I no longer see a way to attach photos in gardenweb.

Here is a link that might be useful:

    Bookmark   September 7, 2011 at 5:08PM
Thank you for reporting this comment. Undo
joy_division

You know what, it looks like peach scale as suggested. Thanks! am I right?

ok a forum related question. Why can I not post follow-up's anymore unless I change the subject line. I can't post photos. Why is it so hard to just post to this forum now?

    Bookmark   September 7, 2011 at 5:12PM
Thank you for reporting this comment. Undo
IpmMan(5)

Yes from the pictures it looks like White Prunicola or Peach scale.
Take or send some to your local Extension service for proper ID. In the mean time hit them with horticultural oil. Hit them again with oil in the spring and again when the crawlers hatch, once identified you can find out when this is.
Merit (imidacloprid) as a drench or soil injection will also completely control this scale but that takes time to work so don't skip the first oil application.

    Bookmark   September 7, 2011 at 7:25PM
Thank you for reporting this comment. Undo
hortster(6a, southcentral KS)

From the fuzzy picture, if it is indeed white peach scale I am predominately seeing the males. Females are round, also white with a tan center, under magnification looking kind of like a sunny side up egg. White peach scale is a "hard scale" which means that it is hard to kill it with insecticide unless the application coincides with the emergence of "crawlers" from beneath the females. As to the date of insecticide application, not knowing where you are and your zone, contact your extension service for the likely emergence of crawlers and what to use.
hortster

    Bookmark   September 7, 2011 at 7:28PM
Thank you for reporting this comment. Undo
joy_division

new york zone 7.

    Bookmark   September 7, 2011 at 7:46PM
Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

Sheesh, I could have sworn you said they were like small white pencil points! lol. Male peach scales, which are the white ones, are always clearly oblong in shape...quite distinctive. You took a VERY good picture. There's no other scale that looks quite like this.

I'd ask you to ponder most carefully on the recommendation of Imidicloprid drenches. This chemical would need to be applied in the spring when your plant is probably getting ready to flower and it is well known that imidicloprid is translocated to the nectar and pollen of flowering plants, making it a problem for pollinating insects and even hummingbirds.

I think that you will have quite a bit of success with your horticultural oil applications, as long as you attend to your plant three or four times over the fall, winter, and early spring. Be sure to concentrate on getting the product all over the trunk, branches and twigs...nooks and crannies and all. Please use a commercial product specially manufactured to be mixed with water to make an emulsion.

Horticultural oil applications have been the most recommended and successful remedy for a wide variety of scale insects for generations.

    Bookmark   September 7, 2011 at 11:05PM
Thank you for reporting this comment. Undo
joy_division

Thanks for the feedback Rhizo. You said commercial product. Where do I get a commercial version of horticultural oil?

    Bookmark   September 8, 2011 at 10:59PM
Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

You can find a wide assortment of horticultural oils at any garden center, nursery, or garden department in a big box store.

    Bookmark   September 9, 2011 at 2:48PM
Thank you for reporting this comment. Undo
IpmMan(5)

I could not resist adding a bit on my Recommendation for Imidacloprid but so as not to hijack this post, started a new one.

Here is a link that might be useful: The use of Imidacloprid

    Bookmark   September 11, 2011 at 11:19AM
Sign Up to comment
More Discussions
Miscoscopic silver insect
Hi, I need help for an identification. I found them...
MerlinMerlin
Acacia invaded by Caterpillars!
My wife and I don't know what to do. We have a small...
llilibel03
Black/brown dots on basil, diamond-shaped bugs
Hello, So, something has been injuring my basil plant....
yotekai
Getting rid of soil nematodes
Dear veggie lovers: This is my first season growing...
diane_zn7a_albqnm_5500ft
Best organic pesticide for house plant soil?
Best organic pesticide for house plant soil? I currently...
algar32
Sponsored Products
Winter White - Satin Light Gray Shade Ovo Table Lamp
Lamps Plus
31 Inch Glossy White Bathroom Vanity Set
TheBathOutlet
PoLXgonal Support Photoflood Lamp
ParrotUncle
Euro Style Vinnie Counter Stool - White - Set of 2 - EUS1017
$596.00 | Hayneedle
Halston 8-Light Chandelier
FRONTGATE
Beaded Table Lamp with White Shade
Euro Style Lighting
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™