Pyrus calleryana 'Jack'
Deciduous, Trees, Flowers
Grown for their profuse late-winter or early-spring show of white flowers and their glossy, attractive leaves. Not at their best in shallow soils but otherwise unfussy about soil, even growing well in heavy clay. Most are subject to fireblight.
To 50 ft. tall and wide,with strong horizontal branching pattern; young growth is thorny. Broadly oval, scallop-edged, leathery, 1/2 –3-in.-long leaves are glossy dark green, turning rich purplish red in fall. Blooms very early; late freezes may destroy flower crop. Very small, round, inedible fruit. Less susceptible to fireblight than most pears.
Oval shape to 15 ft.tall, 10 ft. wide, with white flowers and dark green leaves that turn yellow in fall.
Native to northernChina, Korea, and Japan.To 2 1/2–3 ft. high, 3 ft. wide, with upright shoots and ere...
Most plants sold underthis name are narrowly pyramidal in form; some are more columnar. To 40 ft. tall...
The original P. calleryana variety. Pyramidal to 50 ft. tall, 35 ft. wide. Strongly vertical ...