Genus, all trees
AcerA large and important species consisting of chiefly decidous trees. The hardy species are widely spread over the three northern continents.
AesculusAll Aesculus thrive well in the southern half of England and most are hardy enough to succeed in any part of the UK.
AilanthusAilanthus Genus A group of tall trees found in temperate and tropical Asia. Mainly represented in cultivation by A.altissima ‘The Tree of Heaven’.
AmelanchierA genus of small trees found wild in Europe, Asia and most frequently in North America. Cultivation is easy and Amelanchier will thrive in any soil providing extremes of wet or dry are avoided.
AraliaThis genus comprises a selection of 68 species of both deciduous and evergreen trees and shrubs that are native to Asia and the Americas.
AraucariaAraucaria Genus This is a genus comprising of 19 evergreen coniferous trees. Trees within this genus are mainly tall and erect in stature and can reach from 30-80m in height.
ArbutusArbutus Genus A group of evergreen trees and shrubs. Arbutus can be included in the small group of ericaceous plants which will grow successfully in either acid or alkaline conditions.
BetulaBirches comprise some 60 species of deciduous trees native to northern temperate regions.
BroussonetiaBroussonetia Genus Closely related to mulberries, but less woody, there are two species in general cultivation originating from N E Asia.
BuxusThis large shrub can occasionally be classified as a small tree and is a clonal selection of common box that won the Award of Garden Merit in 2002.
CallistemonCallistemon Genus This is a genus of 34 shrubs and small trees that are mainly endemic to Australia. They are commonly referred to as Bottle brush trees.
CalocedrusA small genus of three species of evergreens related to Thuja. They are native to S E Asia and North America.
CamelliaCamellia Genus This is a genus containing between 100 and 250 species of flowering plants native to Eastern and Southern Asia.
CarpinusAlthough there are about 45 species of hornbeam, barely half of them are in cultivation.
CaryaHickory. This genus is mainly a North Americaqn one but there are a few Asian species also.
CastaneaThis genus was probably native to western Asia. It has been cultivated for more than 3000 years and today it occurs in wild or naturised populations throughout Southern Europe, North Africa and South
CatalpaCatalpa Genus Beautiful, summer flowering trees, this small genus has about 11 species.
CedrusCedar. A great many species in the Cupressaceae are also commonly referred to as cedars, so species of Cedrus are sometimes identified as true cedars.
CeltisCeltis Genus Sometimes known as Nettle Trees, these deciduous trees, of which there are around 60 species, are related to Elms.
CercidyphyllumThis genus of two species native to East Asia has uncertain affinities. It is thought to be related either to Euptelea or Liriodendron. The genus is the only member of the family Cercidyphyllaceae.
CercisThis distinct genus has seven leguminous species which are very similar to each other, but markedly different from all other Leguminosae.
ChamaecyparisFalse cypresses are made up of five species of evergreen trees, which are natives of North America, Taiwan and Japan. These few species have given rise to an enormous number of cultivars.
ClerodendrumThis is a large genus of more than 400 species of trees, shrubs and climbers, but only three are hardy in Britain.
CornusA genus of around 50 species ranging from creeping shrubs to trees, they are widely distributed mainly in temperate areas.. Most are ornamental in different ways and are easy to cultivate.
CorylusCorylus Genus Hazels are well-marked, deciduous trees and shrubs. The genus comprises around 10 species, many of which are cultivated for their edible nuts.
CotinusSmoke bush or Smoke tree is a genus of two species of flowering plants, closely related to the sumacs, family Anacardiacea
CrataegusCrataegus Genus Thorns are some of the hardiest and most adaptable trees, thriving in conditions which would be intolerable to many others.
CryptomeriaThis is a monotypic genus of conifer, meaning that it is the only one of its type in the genus. It is a member of the Cypress family.
CupressocyparisCupressocyparis Genus A genus of hybrids between Cupressus and Chamaecyparis, all of which have arisen in cultivation.
CupressusCupressus Genus This small genus of coniferous, evergreen trees does well in a wide range of soil types.
DavidiaA single species genus, it is believed to have the same ancestors as Cornaceae and Nyssaceae.
EuonymusEuonymus Genus A wide ranging genus of more than 170 species, it includes deciduous and evergreen small trees.
FagusBeeches are confined to the northern hemisphere and this genus of about ten species includes some of the most stately of all trees.
GinkgoThis single species genus was once regarded as a distinct member of the Yew family, it is now placed in its own order– the Gingkoales – of which it is the sole living member.
GleditsiaA genus of 12 spiny, deciduous species, all but one of which originate in North America and Asia.
HibiscusThis is a large genus of approximately 200-220 species that are native to the warm temperate and sub-tropical regions of the world. This genus is characterised by a display of showy flowers.
IlexA large genus of deciduous and evergreen trees and shrubs, the most valuable are the evergreens.
JuglansThe walnut genus has some 20 species, of which just under half are in cultivation. Beautiful trees which are highly prized for their ornamental value and for their timber.
JuniperusJuniperus Genus This is a genus of 50-67 plants and trees that are largely found throughout the Northern Hemisphere .
LaburnumVery closely related to Cytisus, this genus of just two species provides wonderful colour in early summer, earning its name in German of Goldregen (Golden Rain).
LagerstroemiaThis genus of some 50 species was named by Linnaeus after his friend Magnus von Lagerström of Gothenburg.
LarixThere are 11 species in the larch genus, and they are unusual in being deciduous conifers.
LaurusThis is a genus of evergreen trees. It is a very ancient genus whose fossils have been traced back to before the Pleistocene glaciations.
LigustrumOf the sixteen hardy species of Privet, all but Common Privet, which is found in Europe, originate in China and Japan.
LiquidambarThis small genus is similar to the Maples (Acer), but Liquidambars have alternate rather than opposite leaves.
LiriodendronThis two species genus is closely related to Magnolias, but it differs in having truncate rather than pointed leaves.
MagnoliaMore than 120 species of deciduous and evergreen trees and shrubs comprise this genus of outstandingly attractive subjects.
MalusThe genus of flowering crabs is made up of 25 deciduous trees, and was once linked generically with Pyrus.
MespilusThis single species genus is related to Crataegus, but differs in having solitary flowers.
NyssaNoted for their good autumn colour, eleven species make up this genus which is allied to the Cornaceae, but now has its own group Nyssaceae.
OleaOlives are evergreen trees from tropical or warm temperate areas of the Old World. There are more than 40 species in the genus.
OstyraAround ten species comprise this genus, resembling the hornbeam and producing hop-like fruits in autumn.
ParrotiaThis genus of just one species is named for F W Parrot, who made the first ascent of Mount Ararat in 1829.
PaulowniaIt is likely that Paulownia and Catalpa come from the same ancestry. This small genus of six deciduous trees was named for Anna Paulowna, Hereditary Princess of the Netherlands.
PhellodendronThis genus is a genus of deciduous trees collectively known as Cork trees. The Common name is derived from the corky like bark that some of the tree species exhibit.
PhotiniaThis genus of large, generally evergreen shrubs is allied to the thorns (Crataegus).
PhyllostachysThis genus of bamboos has around 35 species, all originating from the Far East.
PiceaThere are around 35 species in the spruce genus, including Picea abies, widely regarded as our Christmas tree.
PinusThis is a genus of around 110 species of evergreen trees, widely distributed in temperate regions of the northern hemisphere and south to Indonesia and central America.
PlatanusPlanes are quite different from any other group of trees and constitute in themselves the Platanaceae family. Magnificent large trees!
PopulusA genus of 35 generally fast growing trees, poplars are widely distributed throughout northern temperate regions.
PrunusThis genus of some 400 species is surely unbeatable for providing spring and early summer colour. There is a Prunus for every situation and location.
PyrusThe Pears form a genus of about 20 species of generally deciduous trees and shrubs. They are natives of temperate areas of the Old World.
QuercusOaks form a large genus of 500 species, comprising deciduous and evergreen trees, and occasionally shrubs. Only about 70 species are in cultivation.
RhusThere are around 200 species in the Sumach genus, and they are generally easy to grow and undemanding in their requirements.
RobiniaThis genus of ten species is confined to the USA and to Mexico. Easy to grow and tolerant of a wide range of conditions.
SalixThe Willows make a large and diverse genus of more than 300 and sometimes regarded as up to 500 species. Mankind has used willow for a wide range of purposes since pre-historic times.
SorbusA very large and important genus, many of which are ornamental. Included are whitebeams and rowans (mountain ash).
SyringaSyringa Genus There are reportedly over 900 varieties of Syringa vulgaris cultivars with many similar to each other but we major on just the five which make fine small multi stem trees.
TamarixA genus of around 50 small trees and shrubs, they have excellent wind resistance and are very good for coastal locations.
ThuyaA genus of five species of evergreen trees and shrubs, they are widely distributed in northern temperate areas.
TiliaThere are 45 species of deciduous trees in the Lime or Linden genus, and they hybridise readily when grown from seed.
TrachycarpusA small genus of eight species belonging to the Palmae group, only T fortunei is hardy in Britain.