Jersey the island. The species is the subject of an ongoing programme to save it from extinction in Jersey via a collaboration between States of Jersey, Durrell Wildlife Conservation Trust and Jersey Amphibian and Reptile Group (JARG), with support and sponsorship from several other organisations. The programme includes captive breeding and release, public awareness and habitat restoration activities. Trees generally considered native are the alder ("Alnus glutinosa"), silver birch ("Betula pendula"), sweet chestnut ("Castanea sativa"), hazel ("Corylus avellana"), hawthorn ("Crataegus monogyna"), beech ("Fagus sylvatica"), ash ("Fraxinus excelsior"), aspen ("Populus tremula"), wild cherry ("Prunus avium"), blackthorn ("Prunus spinosa"), holm oak ("Quercus ilex"),
Prunus subhirtella Prunus subhirtella Prunus subhirtella ("Prunus" × "subhirtella") or Prunus pendula sometimes also called winter-flowering cherry, spring cherry, Higan cherry, or rosebud cherry is a small deciduous flowering tree originating in Japan, but unknown in the wild. It is probably of hybrid origin between "Prunus incisa" and "Prunus spachiana". "Prunus subhirtella" bears white to pink flowers which may emerge intermittently from autumn through to spring, and small black fruit. Several garden forms are known. The variety 'Jugatsu-zakura' (incorrectly known as "Prunus" × "subhirtella" 'Autumnalis') is widely grown for its propensity to flower during mild winter weather. The flowers can be used