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Clethra alnifolia Vanilla Spice
One of the most fragrant of all shrubs for our gardens, and as a bonus, spikes of white flowers bloom in late summer when little else is in flower; neat, tidy habit of growth and good fall color; tends to sucker, needs moist acidic soil
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Summersweet will grow to be about 6 feet tall at maturity, with a spread of 5 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 30 years. This shrub does best in full sun to partial shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type, but has a definite preference for acidic soils, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This species is native to parts of North America.
Height
6 feet
Width
5 feet
Exposure
full sun to partial shade
Water Needs
average to wet
Hardiness
Zone 4a-4a
Growth Rate
slow