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Pecan
Carya illinoinensis
Non-nativeDeciduousAngiospermMedium (15-30m)
Introduction

Producer of delicious edible nuts with a sweet buttery flavour.

Distribution

Native to Mexico and to central and southern USA. Uncommon in Britain and Ireland, but grows reasonably in warmer areas to south, and well-suited to Italy, southern France and Spain.

Biology

Monoecious.

Identification

Tall where native (40m), only 25m where introduced, with a broad crown on slender branches. Bark grey-brown, ridged, with exfoliating plates. Twigs red-brown, variously downy. Leaves pinnate compound, 30-60cm, with 9-15 slender serrated leaflets, the lower ones aerofoil-curved, downy beneath. Fruit a four-valved drupe separated by winged sutures, containing the well-known nut.

Culture

Grafted trees used for commercial production in USA. Rarely produces nuts in Britain and Ireland. Quite prone to wind damage. Choose warm, sheltered sites with fertile soils.

Biodiversity

Low where introduced.

Threats

Generally healthy.

Uses

An attractive specimen tree. Foliage is briefly vibrant yellow in autumn. Timber lower quality than other hickories.

Related news
Key
Native statusNon-native
Foliage typeDeciduous
Tree groupAngiosperm
Size classMedium (15-30m)
Conservation status (IUCN)No category recorded
Classification
DivisionAngiospermae
OrderFagales
FamilyJuglandaceae
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