Pterocarya fraxinifolia (Poir.) Spach
Pterocarya fraxinifolia is a tree.
Pterocarya fraxinifolia was already described and the name validly published by Jean Louis Marie Poiret. It was Ãdouard Spach, however, who reclassified it into todays valid botanical systematics .
The trees are comparatively fast-growing and short-lived. They have a rounded to broadly spreading canopy and reach heights of 10 to 25 metres. The plants reach a width of 10 to 15 metres.
Wood and Bark
The bark is silver-grey to green.
Pterocarya fraxinifolia is deciduous. The green, imparipinnate leaves are alternate. The ovate leaflets are serrate and sessile. They turn an attractive yellow in autumn.
Flowers and Fruits
Pterocarya fraxinifolia produces spikes of light-green flowers from May to June. The plants are monoecious, pollination takes places by allogamy through the wind.
The trees produce ornamental green samaras in summer.
The plants form deep-reaching roots.
The trees prefer a sunny situation on moist soil. The substrate should be comparatively rich with a pH between 8 and 10. The plants prefer sandy loam. They tolerate temperatures down to -18Â°C (USDA zone 7).
Classification after Prof. Dr. Sieber
- open areas
Tolerance of special soil conditions
- none: drought
- high: city climate
Suited as avenue tree, specimen plant, greenery along roads, bird pasture and as plant providing shelter for birds.
Maintenance and Propagation
- Remove shoots because they weaken the plant.
- Remove crossing shoots late in winter or in early spring to promote healthy growth.
Propagate by sowing seed in pots outdoors in autumn or by rooting saplings in autumn.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.