Dawn redwood (Metasequoia glyptostroboides)

The arboretum contains around 2900 woody plant species (some 900 deciduous and 200 coniferous trees, as well as 1800 shrub species). It comprises part of the larger systematics section and is spread over much of the outdoor garden. The plants in the arboretum are also organized according to related taxa in plant families and genera, as far as life forms, soil and climate requirements allow for it. In the arboretum, plants from the following taxa are particularly numerous:

Roses (Rosaceae)

Legumes (Fabaceae)

Magnolias (Magnoliaceae)

Maples and Chestnuts (Acer sp. and Aesculus sp.)

Oaks (Quercus sp.)

Walnuts (Juglandaceae)

Lime trees (Tilia sp.)

Dogwoods (Cornaceae)

Buckthorns (Rhamnaceae)

Barberries (Berberidaceae)

Oriental bittersweet (Celastrus orbiculatus) on a London plane (Platanus x hispanica)
Quince (Cydonia oblonga) in traditional grafting on hawthorn (Crataegus monogyna)