black spots on roses

I purchased Mancozeb fungicide to stop the black spots on my rose leaves. It came in a pint bottle and the instructions just say to spray it on. There were no instructions that says just spray it on or dilute it. So I put it in a spray bottle and it wouldn’t spray. Then I bought another spray bottle and it is still too thick to spray on. How am I supposed to put it on if it is too thick???
Am I supposed to dilute it or what/how to apply.

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1 Comment To "black spots on roses"

#1 Comment By Downtoearthdigs On 04/30/2019 @ 8:03 pm

I can’t speak to the products that you have or any application instructions; you will need to contact the manufacturer for any questions.
However these links are what we suggest for treatment of Black Spot disease.

https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm ^[1]
https://www.gardeningknowhow.com/plant-problems/disease/black-spot-fungus.htm ^[2]

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URL to article: https://questions.gardeningknowhow.com/black-spots-on-roses-3/

URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm: https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm

[2] https://www.gardeningknowhow.com/plant-problems/disease/black-spot-fungus.htm: https://www.gardeningknowhow.com/plant-problems/disease/black-spot-fungus.htm

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