Pyrus calleryana ‘Jack’
Deciduous, Trees, Flowers
Ornamental pears are grown for their profuse late-winter or early-spring show of white flowers and their lustrous leaves. Not at their best in shallow soils, they’re otherwise unfussy, even growing well in heavy clay. Most are subject to fireblight. Fruiting pears are described under Pear, Asian and Pear, European.
This deciduous tree grows to 50 ft. tall and wide, with a 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 and 10 ft. wide, with white flowers and dark green leaves that turn yellow in fall.
This rounded shrub grows to 3–15 ft. tall and wide. Its bright green, paired or whorled leaves c...
From New Zealand. Tiny gray leaves form a very tight carpet to 1/2 in. high and 1 ft. wide; stems...
This is the original P. calleryana variety. Pyramidal to 50 ft. tall and 35 ft. wide. Strongl...