Thursday, October 25, 2007

Young ‘Redspire’ Callery Pear

Pyrus calleryana ‘Redspire’

‘Redspire’ Callery Pear quickly grows 35 to 45
feet high and 20 feet wide, with upright-spreading,
thornless branches (Fig. 1). The narrow crown enable
this tree to be used in tight overhead spaces. The
silhouette appears as a fat column growing wider than
‘Whitehouse’ and ‘Capital’ but narrower than
‘Bradford’ and ‘Aristocrat’. In spring before the new
leaves unfold, the tree puts on a nice display of pure
white flowers larger than ‘Bradford’ or ‘Aristocrat’.
Flowering may be subdued in USDA hardiness zone
8b and it occurs at about the same time as ‘Bradford’
Callery Pear. The leaves emerge as red/purple, then
become 1.5 to 3 inches long, glossy green with wavy
margins and a red blush. They turn yellow to orange
in fall in the south putting on an attractive display
before dropping. Fall color may be subdued in the
north. The small, pea-sized, red/brown fruits which
form are quite attractive to birds and other wildlife,
and mummify on the tree persisting for several months
to a year. Planting two or more cultivars of Callery
Pear together could increase fruit set.

Scientific name: Pyrus calleryana ‘Redspire’
Pronunciation: PIE-rus kal-ler-ee-AY-nuh
Common name(s): ‘Redspire’ Callery Pear
Family: Rosaceae
USDA hardiness zones: 5 through 9A (Fig. 2)
Origin: not native to North America

Uses: container or above-ground planter; large
parking lot islands (> 200 square feet in size); wide
tree lawns (>6 feet wide); medium-sized parking lot
islands (100-200 square feet in size); medium-sized
tree lawns (4-6 feet wide); recommended for buffer
strips around parking lots or for median strip plantings
in the highway; screen; shade tree; small parking lot
islands (< 100 square feet in size); narrow tree lawns
(3-4 feet wide); specimen; sidewalk cutout (tree pit);
residential street tree; tree has been successfully grown
in urban areas where air pollution, poor drainage,

Height: 35 to 45 feet
Spread: 20 to 30 feet
Crown uniformity: symmetrical canopy with a
regular (or smooth) outline, and individuals have more
or less identical crown forms
Crown shape: pyramidal
Crown density: moderate
Growth rate: fast
Texture: medium
Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: crenate; sinuate; undulate
Leaf shape: ovate
Leaf venation: pinnate; reticulate
Leaf type and persistence: deciduous
Leaf blade length: 2 to 4 inches; less than 2 inches
Leaf color: green
Flower color: white
Flower characteristics: spring flowering; very
Fruit shape: round
Fruit length: < .5 inch
Fruit covering: dry or hard
Fruit color: brown; tan
Fruit characteristics: attracts birds; attracts squirrels
and other mammals; inconspicuous and not showy; no
significant litter problem; persistent on the tree
Trunk and Branches
Trunk/bark/branches: bark is thin and easily
damaged from mechanical impact; routinely grown
with, or trainable to be grown with, multiple trunks;
grow mostly upright and will not droop; not
particularly showy; tree wants to grow with several

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