ORNAMENTAL PLANTS OF HORTICULTURE VALUE
Hardy trees and shrubs for special environmental conditions
Populus euphratica Olivier - Cottonwood
Caucasus (southern Transcaucasus, Araks, Zangezur), northern
Turkey and western Iran. Along streams.
Tree of medium size. Leaves pale grey-green, vary in form,
linear-lanceolate on the long branches to broadly oblong on the
short branches. Very spectacular. Disease resistant, also heat
and drought resistant. Z 6. New.
Populus hyrcana Grossh. - Cottonwood
Caucasus (western Transcaucasus and Talysh). In forests,
Tree of medium size. Leaves rhomb-shaped or oblong, pale
green, almost white, woolly. Very spectacular. Heat resistant.
Z 6 (5). New.
Populus maximowiczii A. Henry - Cottonwood
Far East (Amur River basin, Sakhalin). Along streams in
Tree 30 m with wide oblong crown. Leaves leathery, broadly
oblong, slightly cordate, 5-10 cm x 5-7 cm. Very spectacular.
Resistant to urban pollution and to diseases. Z 5 (4).
Populus pruinosa Schrenk - cottonwood
Central Asia (basin of the Syr-Darya and Amy-Darya rivers,
Pamiro Alay, mountains of Turkmenia). On sandy, often saline
soil, along streams in desert.
Trees of small or medium size, 4-7 m. Leaves entire,
leathery, kidney shaped, with grey coating. Petiole
cylindrical. Young leaves densely pubescent. Heat and salt
resistant, very ornamental. Z 6 (5). New.
Populus tadshikistanica Kom. - cottonwood
Central Asia (Pamiro Alay). Along streams.
Tree of medium size with downy twigs and slightly weeping
branches. Leaves 2.5-5.0 cm x 1.5-4.0 cm, broadly lanceolate,
ovate or deltoid, acuminate, crenate. Tolerant of smoke
pollution. Heat resistant. Z 5. New.