Rhododendron 'Herbert' (Gable Hybrid) – Herbert Azalea
Small semi-evergreen shrub with double lavender flowers resembling orchids
Plant in rich, moist but well-drained soil; fertilize in spring
Plant in morning sun to partial shade; prune after blooming
Height: 2-4 feet; Width: 3-5 feet
Hardy in USDA zones 5-9:
Zone 5: Plant in spring to prevent winter heaving; plant in morning sun to light shade; mulch after first hard frost; avoid exposure to salt.
Zone 6: Plant in spring or early fall; plant in morning sun to light shade; mulch after first hard frost.
Zone 7: Plant in early fall; plant in morning sun to partial shade; mulch after first hard frost.
Zone 8: Plant in early fall; plant in light to partial shade; mulch after first frost.
Zone 9: Plant in early fall; plant in light to partial shade; mulch in fall.
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Rhododendron catawbiense 'Alba' – Alba Rhododendron
Medium to large evergreen shrub with fragrant white flowers in early summer
Plant in rich, moist but well-drained soil; fertilize in spring; prune after blooming
Plant in morning sun to partial shade; can tolerate full sun in colder zones
Height: 6 feet; Width: 6 feet
Hardy in USDA zones 4-8:
Zone 4: Plant in spring to prevent winter heaving; plant in full sun to light shade; mulch after first hard frost; avoid exposure to salt.
Zone 5: Plant in spring to prevent winter heaving; plant in full sun to partial shade; mulch after first hard frost; avoid exposure to salt.
Zone 6: Plant in spring or early fall; plant in morning sun to partial shade; mulch after first hard frost.
Zone 7: Plant in early fall; plant in morning sun to partial shade; mulch after first hard frost.
Zone 8: Plant in early fall; plant in light to partial shade; mulch after first frost; plants may struggle in areas with hot, humid summers. Walter's experience has shown that these plants may struggle in zone 8 in the south, but do much better in zone 8 in the Pacific Northwest.
Thuja occidentalis 'Hetz Midget' – Hetz Midget Arborvitae
Dense, globe-shaped evergreen shrub noted for its tight green foliage that bronzes in winter
Plant in full sun to light shade in rich, moist, but well-drained soil
Water regularly first season and in times of dry weather
Fertilize in mid spring with acid-based fertilizer
Dog urine may leave brown spots on foliage
Height: 2-4 feet; Width: 3-5 feet
Hardy in USDA zones 2-7:
Zone 2: Plant in spring to prevent winter heaving; plant in full sun; apply extra mulch after first hard frost; avoid contact with salt; avoid exposure to harsh winter wind.
Zone 3: Plant in spring to prevent winter heaving; plant in full sun; apply extra mulch after first hard frost; avoid contact with salt; avoid exposure to harsh winter wind.
Zone 4: Plant in spring to prevent winter heaving; plant in full sun; apply extra mulch after first hard frost; avoid contact with salt; avoid exposure to harsh winter wind.
Zone 5: Plant in spring to prevent winter heaving; plant in full sun; apply extra mulch after first hard frost; avoid contact with salt; avoid exposure to harsh winter wind.
Zone 6: Plant in spring or early fall; plant in full sun; apply extra mulch after first frost.
Zone 7: Plant in early fall; plant in full sun to light shade; apply extra mulch after first frost.
Gardening by Zip Code If you're looking to start a gardening project but don't know your gardening zone—visit the National Gardening Associations's USDA Hardiness Zone Finder. Enter your Zip Code to identify the proper zone.
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