I pick off and burn the affected leaves as soon as the orange spots appear so that the fungus can't develop more spores. It doesn't seem to affect the fruiting of the tree.
“I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh
Your soil does look quite claggy and rich. Most herbs like rosemary, mint, thyme etc., do better in a sunny position in a free-draining, gritty soil. They will languish and be more subject to mildew, fungal diseases etc., in a rich soil and if they shade each other out. Looks like some critter has been munching on those clearly very tasty leaves in the middle photo as well!
It’s really not necessary to use any treatment on herbs and definitely not advisable if you are growing them for culinary use imho. Better to look to your soil and growing conditions first.
Difficult to tell from the photos but it looks fairly crowded, with a fair amount of leaf debris as well as possibly over-rich, damp soil, all not good for the Mediterranean-type herbs. Flat leaf parsley and the ‘soft’ leafy herbs like chervil can take a richer soil and more water, so might do ok there.
It’s cheap enough to buy small plants that will grow fast in the right conditions, I would dig them out, dig over your soil and check the drainage. Dig in large quantities of grit of the soil is rich and/or poorly drained and replant new ones, giving them space and sun.
If you can’t provide the right conditions in the ground, grow them in pots in a gritty, free-draining medium and mulch the top of the pots with more grit. That way you can provide the right growing medium, place in the best spot and protect them from excess winter rain. I grow rosemary etc., in ordinary garden soil with about 50% grit dug in - never fertilised, in a sunny location, so I would suggest that’s what you need to aim for. Plant mint in a separate pot, as it will spread like crazy and take over everything.
As borderline says, they are still safe to eat, just don’t look very attractive!
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As for the pear ... did the leaves look anything like this?https://www.orangepippintrees.co.uk/fruit-tree-problems/pear-rust
I pick off and burn the affected leaves as soon as the orange spots appear so that the fungus can't develop more spores. It doesn't seem to affect the fruiting of the tree.
Difficult to tell from the photos but it looks fairly crowded, with a fair amount of leaf debris as well as possibly over-rich, damp soil, all not good for the Mediterranean-type herbs. Flat leaf parsley and the ‘soft’ leafy herbs like chervil can take a richer soil and more water, so might do ok there.
It’s cheap enough to buy small plants that will grow fast in the right conditions, I would dig them out, dig over your soil and check the drainage. Dig in large quantities of grit of the soil is rich and/or poorly drained and replant new ones, giving them space and sun.
As borderline says, they are still safe to eat, just don’t look very attractive!
Hope that helps.