Prunus spinosa flore-pleno (Double-flowered Sloe).
,, Laurocerasus (Common Laurel).
,, lusitanica (Portugal Laurel).
Pyrus japonica (Japan Quince).
Ribes aureum (Golden-flowered Currant).
,, sanguineum (Flowering Currant) and varieties.
Rosa. The different wild Roses and Rosa rugosa.
Rubus (Bramble). The double-flowered and cut-leaved forms are very ornamental.
Salix (Willow) of sorts. All prefer moist soil.
Sambucus (Elder) of sorts.