Can Dormant Oil/ Lime Sulfur Be Used On Perennials Other Than Roses And Trees In Early Spring?

Last year I had some plants with powdery mildew and am hoping to get ahead of it this year. I dormant oil/ Lyme sulfur my roses in spring. I trimmed back the dead foliage to the ground on the affected perennials ( ie. salvia, speedwell, asters). Can I spray them too.

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1 Comment To "Can Dormant Oil/ Lime Sulfur Be Used On Perennials Other Than Roses And Trees In Early Spring?"

#1 Comment By GKH_Susan On 04/29/2021 @ 1:38 pm

That should be fine. Here is more:

https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm ^[1]

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[1] https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm

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