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white patches on rose stem

There are white patches forming on stem and after some days the stem turns to black color. What should I do now?

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1 Comment To "white patches on rose stem"

#1 Comment By roseman On 10/05/2014 @ 1:16 pm

That photo sure looks like a bad case of Scale attacking the rosebushes. I would recommend using either the product at this link: [1] or get some Bayer Rose and Flower Care granules and give the rosebushes some of the granules mixed into the soils ASAP. The granules are a systemic that will move through all the tissues of the rosebushes and will provide a longer lasting control.

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