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Hardiness: 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)
On May 18, 2012, plant_it from Valparaiso, IN wrote:
Native to Japan, Korea, and Northeast China, Morrow's Honeysuckle is highly invasive in the Northeast and Midwest of the United States. I am battling it like crazy in our woods in Indiana. Morrow's Honeysuckle thrives at the edges of forests, roads, or other natural or man-made barriers, but is not limited to them, and is found in both mature and disturbed forests. In some areas, Morrow's Honeysuckle is the dominant plant species, especially in areas of disturbed ecological succession. It is suspected that Lonicera morrowii is allelopathic, and may capitalize on disturbed ecological succession by establishing itself and then preventing the growth of plants underneath it. With a sufficiently established thicket of honeysuckle, even other shade-tolerant, invasive species, such as Fortune's Spindle have difficulty growing underneath it, whether due to its suspected allelopathic activity or through soil depletion. Due to its early leafing, Morrow's Honeysuckle is particularly harmful to spring ephemerals, flowers that evolved to bloom briefly in the spring before other plants leafed out.
If you live in North America, please choose a native bush like Bottlebrush Buckeye, Ninebark or Black Chokecherry instead.
On Apr 21, 2004, langbr from Olathe, KS (Zone 6a) wrote:
A deciduous shrub form of honeysuckle that flowers in late Spring. Flowers are extremely fragrant and very sweet smelling as is typical of honeysuckle. Bright red berries develop in June/July. This shrub is very attractive to bees during flowering stage and birds during fruiting. Makes an excellent privacy hedge or screen. Native of Japan.
This plant has been said to grow in the following regions: