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Sunflower die-back
Does anyone recognise what this is? See stem and leaves.
I have 4 sunflowers and this is the only one of the 3 with this. Not sure how much it's affecting the plant as it's the only one not yet well into flower. There are buds but on the smaller side.

I have 4 sunflowers and this is the only one of the 3 with this. Not sure how much it's affecting the plant as it's the only one not yet well into flower. There are buds but on the smaller side.

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I've got something similar on a tomato, but it doesn't seem to affect the plant.
I live in west central Scotland - not where that photo is...
It towers over me as well, 7-8ft tall so they'd be committed slugs.
Maybe if the slugs damaged the plant then an infection could've got in and caused the leaves to rot?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I live in west central Scotland - not where that photo is...