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Hardiness: USDA Zone 2a: to -45.5 °C (-50 °F) USDA Zone 2b: to -42.7 °C (-45 °F) USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F)
On Apr 1, 2007, JoanJ from Belfield, ND (Zone 4a) wrote:
This plant is listed on the North Dakota invasive/troublesome list and this information is being distributed in a guide developed by the ND Weed Control Association and other agencies.
Plant Features
Perennial, up to 30 feet tall
Evergreen/cedar-like shrub or small tree
Loses all of it's leaves in the fall
Leaves soft, scale-like, turn yellow/reddish before dropping in late fall
Bark is scaly and reddish on older plants, smooth and reddish on younger plants
Large stout taproot with a slender upright or branched trunk
Flowers abundant, white to pink, 5 petals, located on the ends of branches
Blooms May through September
Spreads by plant fragments and pepper size/like seed
Distribution:
Widespread invasive found in ornamental landscape plantings and in moist areas (waterways, shorelines, etc.)
Interesting Facts:
May transpire up to 200 gallons of water daily
Suppresses growth of other plants by excreting salt (increases soil salinity).
Roots known to reach 50 foot depths.
A single plant may produce over half-million seeds per year
On Jul 23, 2005, scutler from Charleston, SC (Zone 8b) wrote:
This plant does well along coastal areas as it is not sensitive to high salt content.
However, the species (not specific to this cultivar) is listed on US National Arboretum Invasive species list ([HYPERLINK@www.usna.usda.gov] ) for Western US where it is known to clog stream beds. In addition there is some indication that the plant may adversely effect neighboring plants by retaining salt and thus raising the salinity of the surrounding soil.
Regional...
This plant has been said to grow in the following regions:
