Roses
Q.

Why are rose buds turning brown & dropping off when the plant looks healthy?

Zone 28787 | Anonymous added on June 28, 2019 | Answered

Rose plant looked very healthy with shiny leaves when I bought it. In spite of weekly spraying with 3--in-1 rose spray (insecticide, fungicide, black spot), it has now got totally brown buds that fall off & no new healthy buds. Leaves are still green. It has gotten plenty of rain this summer. What's wrong?

A.
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roseman
Answered on July 4, 2019

The amount of spraying could be too much and is having a negative effect upon the overall rosebush. Too much rain can actually cause the buds to get water logged, sort of rot, turn brown and fall off. Here is a link to an article I wrote on roses not blooming that may be helpful to you as well: https://www.gardeningknowhow.com/ornamental/flowers/roses/no-blooms-on-roses.htm

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