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Pest identification
nick.bowler
Posts: 1
Does anyone know what this is, growing on the underside of a hawthorn leaf. It appears to be attached to the veins. Should I be concerned? Thank you
0
Posts
I think that's Cedar Hawthorn Rust
https://www.bartlett.com/resources/rust-diseases-of-hawthorn.pdf
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.