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Kalmia latifolia

Ericaceae

(eastern North America)

Habit
Like rhododendrons, symmetrical, broadly bushy normal shrub, 2-3 m tall and wide; extended and broad when old; very old specimen are 4 m tall, bizarre small trees; slow-growing.
Flowers
Buds carmine, light pink when open, appearing to be two-tone; individual flowers like cups, 2 cm, in clusters in corymbs with many flowers, end of May or June; attractive flowering shrub.
Fruits
Inconspicuous.
Leaves
Evergreen, slenderly elliptical to lanceolate, up to 10 cm long, initially fresh green, then dark green.
Demands
Sun to semi-shade; grows well in the sun if sufficient humidity, then better flower colours; in cool, humid areas, frost hardy, needs wind protection.
Soil
Good on fresh to moist or even damp, very acidic to neutral, but humic substrates; avoids chalk.
Note
The following varieties are slow-growing dwarfs to small shrubs that reach a height of 0.5-1.5 m.
Hardiness
Zone 5b

Overview of varieties of Kalmia latifolia

Variety Colour of buds Colour of open flowers
'Elf' Light pink white
many flowers
'Heart of Fire'
Red deep pink,
whitish centre
'Heart's Desire'
Dark red cinnamon-red with white margins
'Nipmuk' Intense red light pink to cream-white, intense pink on the back
'Olympic Fire' Deep red pink
'Ostbo Red' Bright red light pink,
great contrast to buds
'Pink Surprise' Deep pink light pink
'Pinwheel' Soft pink red with white centre, great contrast to buds
'Quinnipiac' Red pink
'Richard Jaynes' Raspberry-red pink with silvery shimmer
Höhe, Breite, Stammumfang cm 1 Stück in Euro ab 10 Stück in Euro ab 50 Stück in Euro
container grown
40-50
50-60
36,90
44,50
rootballed or container grown
25-30
30-40
25,50
30,50
22,45
26,90
3xtr., rootballed
40-50
50-60
36,90
44,50
Specimen, 4xtr., rootballed
60-70
70-80
80-90
113,80
161,50
220,--