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Pests & Diseases - The Harkness Rose Company
My roses have a bad infestation of these green flies and many of my other plants too such as catmint. Vinegar and soap solutions didn't help. Would neem oil be useful? :
How do I get rid of aphids (greenfly and blackfly)? | Hayes Garden World
How can I keep these bugs off my plants? Washing up liquid in water (recommended by my mother) couldn't save my lupins last year. : r/gardening