We covered this topic in detail in a previous post. As you will see, hedge – or other – clippings up to 1cm (1.5cm if you have a well-functioning compost heap/bin) in diameter can be added without further action…
This means that the stems and foliage (not branches – they require additional work as detailed in that earlier post) of the following can all be sent straight for composting
Euonymus fortunei ‘Emerald Gaiety’
Euonymus fortunei ‘Emerald ‘n’ Gold’
Perovskia Blue Spire
Photinia Red Robin
Purple Copper Beech
NB: Conifer clippings (Leylandii, Thuja plicata atrovirens AGM etc.) will release tannins which can harm other plants. They should therefore be stacked on their own and allowed to compost for at least three months before being used anywhere in the garden.