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Japanese honeysuckle

Japanese honeysuckle

Lonicera japonica
A vigorous, twining, semi-evergreen woody vine grown historically for its sweetly fragrant flowers that open white and age to yellow, scenting warm evenings, followed by small black berries. The honest catch, and it is a serious one: Lonicera japonica is one of the most aggressive invasive vines across much of the eastern and central United States. It smothers shrubs, young trees, and native ground layers under a dense blanket, girdles stems as it twines, and is listed as a noxious or invasive weed in many states. Do NOT plant it where it can escape into wild or unmanaged ground. For the same fragrance and far better wildlife value with none of the ecological cost, plant the native coral honeysuckle (Lonicera sempervirens) instead.
Climate fit: narrow (30/100)
Structure
Light
Full sun / Part shade
Water
Moderate water
Mature size
192-354" tall · 48" apart
Hardy in zones
5a-8b
very cold to frosty winters
Native in Illinois
No

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Not an edible plant.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

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Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Japanese honeysuckle (Lonicera japonica). Retrieved 2026, June 24, from https://plotwright.com/plants/lonicera-japonica
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
NC State Extension Gardener Plant Toolbox
University extension service
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
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