This doesn't look serious to me given the condition of those other leaves but, just in case, you could remove all effected leaves and bin them - do not compost or recycle them - and then make sure the soil around your shrub - more commonly called eleagnus - is not compacted or too damp after winter and then give it a good feed of something like blood, fish and bone or a rose fertiliser and then a mulch of well-rotted garden compost or manure as feeding it will strengthen it and help fight off infections and pests.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
Well, it certainly won't be helping the micro organisms do their work to process debris and make the soil more fertile and aerated. We've inherited the stuff in bands round our perimeter and with all sorts of trees and shrubs planted in it and then neglected for years.
It's a b*itch to keep clear of weeds which just grow on top of it and when I do remove some to plant replacements for dead plants the soil is very compacted and needs a good working over.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
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It's a b*itch to keep clear of weeds which just grow on top of it and when I do remove some to plant replacements for dead plants the soil is very compacted and needs a good working over.