Mystery shrub seedlings

Mystery shrub seedlings

Observation - Mystery shrub seedlings - UK and Ireland. Description: New leaves tinged reddish, silvery down on them, leaflets beneath each leaf, stems reddish brown. A few have self seeded round my pond, but can't recognise it as anything from my garden

New leaves tinged reddish, silvery down on them, leaflets beneath each leaf, stems reddish brown. A few have self seeded round my pond, but can't recognise it as anything from my garden