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Salvia Plants

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

Zone Zone 3 | Anonymous added on April 28, 2021 | Answered

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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Certified GKH Gardening Expert
Answered on April 29, 2021
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