garden_mom
Senior Member
Posts: 105
Joined: Tue Mar 14, 2006 12:12 am
Location: Detroit, MI

Something killing my rhododendrons (and pieris maybe)

I had to take out 2 bushes last week. They were covered with both grey spots that looked chewed and brown rust. I mean completely covered. I don't know how the third one escaped it. What's going on and how do I organically keep it from happening to my remaining bush?

I also have three pieris (mountain andromeda or something like that) that are starting to look bad. I had to prune two of them extensively. The leaves are turning brown; not a dried out leaf, but just brown, then dying after that. I had red mites pretty bad last year. Could that have contributed or is it the same thing that took the rhodes? Also, can any of this affect my nearby roses? I have enough trouble with the black spot! Thanks!

User avatar
Jess
Greener Thumb
Posts: 1023
Joined: Mon Mar 19, 2007 11:50 pm
Location: England

Could be a number of things. Can't tell without pics. Found this link https://www.caf.wvu.edu/resm/aee/cde/plantpath/CD/Rhododendron.html
Anything look like your problem?

garden_mom
Senior Member
Posts: 105
Joined: Tue Mar 14, 2006 12:12 am
Location: Detroit, MI

Darn, I think I found it.

[url]https://images.google.com/imgres?imgurl=https://www.ppdl.purdue.edu/PPDL/images/sod_rhododendron.jpg&imgrefurl=https://www.ppdl.purdue.edu/ppdl/SOD.html&h=160&w=200&sz=8&hl=en&start=49&um=1&tbnid=qrn_XUHnzRraGM:&tbnh=83&tbnw=104&prev=/images%3Fq%3Drhododendron%2Bdisease%26start%3D40%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26rls%3DGGIH,GGIH:2007-14,GGIH:en%26sa%3DN[/url]

It shows Pieris too, and both pictures look like my bushes.

I'll have to read the whole page so I know where to get it tested.

User avatar
Jess
Greener Thumb
Posts: 1023
Joined: Mon Mar 19, 2007 11:50 pm
Location: England

Oh dear :cry:

I thought it might be as I have seen it on a plant before just the once.
It has only recently reached Britain and a nursery can be closed down if found to have a plant with it on.
They all need to be passported now to show who the supplier was.
Do your plants display any of the other symptons on the stems/bark?
If not wait before you destroy them as other diseases can look quite similiar.

garden_mom
Senior Member
Posts: 105
Joined: Tue Mar 14, 2006 12:12 am
Location: Detroit, MI

I'm going to find a place to have the leaves tested to see what it is for sure. We just lost all of our ash trees two years ago, millions of trees in this area. I don't want to be responsible for spreading something that would cause us to lose our oaks.

Return to “Trees, Shrubs, and Hedges”