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Hyacinth Plant

Q.I have three pink rose bushes. I think they are knock out, I did not plant them. The last two years the blooms turn brown and doe

Zone 76310 | Harry & Alice Gordon added on May 26, 2018 | Answered

What is causing my roses to turn brown and not open up?

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Answered on May 27, 2018

It sound like you may have an insect problem. Rose curculios are easy to spot so we can rule them out. Thrips and rose midges are very small and hard to find. Thrips suck the juice from buds and rose midge eggs are laid inside a developing bud. Both cause the bud to fail, turn brown and fall. Here are articles on rose midges followed by thrips: https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-midges.htm. https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-thrips.htm

The internet is full of potential control measures. Using systemic insecticide will harm good and bad bugs, including bees, so it is reserved for severe infestations.

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