Is this a disease or insect damage?

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Posted by g-in-fl 9a Florida (My Page) on

Fri, Oct 25, 13 at 11:15

I don't know what I would do without this forum. I have yet another question.

Does this look like a disease or insect damage?

It has spread over the entire plant except the most recent two or three inches of new growth. I'm talking about the canes ( the leaves don't have a problem )

Any suggestions on a fix?

Gracin

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RE: Is this a disease or insect damage?

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Posted by michaelg 7a NC Mts (My Page) on
Fri, Oct 25, 13 at 11:46

Mealy bugs? I never saw them on roses.

RE: Is this a disease or insect damage?

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Posted by porkpal 9 (My Page) on
Sat, Oct 26, 13 at 13:44

If the white areas are raised, I would suspect a fungal problem.

RE: Is this a disease or insect damage?

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Posted by henry_kuska z5 OH (kuska@neo.rr.com) on
Sat, Oct 26, 13 at 15:11

My "quick and simple" test for fungal problems is to add a drop of undiluted drug store 3% hydrogen peroxide and look for bubbles being formed.

http://homeguides.sfgate.com/hydrogen-peroxide-plant-fungus-86713.html

Here is a link that might be useful: hydrogen peroxide and plant fungus

RE: Is this a disease or insect damage?

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Posted by g-in-fl 9a Florida (My Page) on
Sun, Oct 27, 13 at 11:23

Don't look at the leaves. The white stuff on the leaves is not the problem. It is morning dew with the sun hitting it. The leaves are beautiful and clean. It is the "chickenpox" on the canes that I am worried about. All the canes have those green spots that are slightly raised.
I can see no holes to indicate that an insect has punctured the area, but I can't be sure that it is not insect damage.
On the other hand, I'm concerned that it is a disease of some kind.

RE: Is this a disease or insect damage?

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Posted by jerijen Sunset Z24 (My Page) on
Sun, Oct 27, 13 at 12:19

It's just not clear enuff for me to say.

Jeri

RE: Is this a disease or insect damage?

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Posted by michaelg 7a NC Mts (My Page) on
Sun, Oct 27, 13 at 13:36

Various essentially harmless fungal lesions on the bark are common. I wouldn't worry about it as long as the cane supports healthy growth.

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