Japanese Honeysuckle

The fragrant invasive honeysuckle vine - semi-evergreen, smothering shrubs and young trees and carpeting the ground across the Southeast. Never plant it - grow the native coral honeysuckle instead; this entry is for identifying and controlling it.

How to recognize it and why never to plant it: a fast, semi-evergreen twining vine with paired oval leaves and fragrant white-to-yellow flowers, that smothers and girdles shrubs and trees, carpets the ground, and spreads by runners and seed.

You should never plant Japanese honeysuckle - and correct identification helps, because it must be told from the native coral honeysuckle (which is fine to plant). It's a fast, twining, semi-evergreen vine with simple, oval, opposite (paired) leaves, often keeping many leaves through winter in the South. Through late spring and summer it bears intensely fragrant, tubular, two-lipped flowers in pairs that open white and age to yellow (hence 'gold-and-silver honeysuckle'), followed by small black berries in pairs. Young stems are often finely hairy.

Its danger is its smothering vigor. It twines around and girdles shrubs and young trees, blankets the ground in dense mats that shade out native seedlings and wildflowers, and climbs into the canopy. It spreads by runners that root along the ground, by twining growth, and by bird-dropped seed, and it resprouts when cut. Its semi-evergreen habit lets it photosynthesize into winter when natives are bare, a key competitive edge. Understanding this - smothering, girdling, ground-carpeting growth spread by runners and seed, with a winter head start - is exactly why it belongs in the 'never plant' category, and why the native coral honeysuckle is the choice to make instead.

How it spreads - and why it's hard to remove: bird-dropped seed from the black berries founds new patches, while runners root along the ground and twining stems build dense mats, and it resprouts vigorously when cut.

Japanese honeysuckle spreads by three means at once, which is why it's so pervasive. By seed: birds eat the black berries and scatter the seed into woods and edges far from any planting. By runners: the vine creeps along the ground and roots wherever the stems touch soil, expanding a clone outward into dense mats. And by twining growth up shrubs and trees, building tangles that girdle and smother.

On top of this, it resprouts vigorously from cut or mowed stems and roots, so cutting or mowing alone doesn't kill it - it comes back thicker. This combination - bird-spread seed, rooting runners, and tenacious resprouting - plus its semi-evergreen winter growth, is what makes it one of the hardest invasive vines to eradicate. Effective control has to address the whole plant: cut vines off valuable trees to relieve them, then treat regrowth and the rooted runners (foliar herbicide, often in late fall when it's still green and natives are dormant), remove fruiting vines to stop seed, and follow up for several seasons.

Control, not care: pull/cut and treat (it resprouts and roots as it runs), remove fruiting vines to stop seed, use its semi-evergreen habit against it with late-season treatment, and replace it with native coral honeysuckle.

For Japanese honeysuckle, 'care' means removal, and because it resprouts and roots along the ground, cutting alone backfires. Pull or dig seedlings and small vines when the soil is moist, getting the roots and rooted runners. For established vines, cut them off shrubs and trees to relieve them, then treat the cut stems and leafy regrowth with foliar herbicide. A useful trick exploits its semi-evergreen habit: treating it in late fall or mild winter, when the honeysuckle is still green but native plants are dormant, can target it while sparing natives.

Prioritize removing fruiting vines to shut off the bird-spread seed, and follow up for several seasons against resprouts, rooted runners, and the seed bank. Keep the mildly toxic berries away from young children and pets, and bag and dispose of berry-laden clippings and cut stems (don't let them root or the seeds spread). Then - or instead of ever planting it - choose the native coral honeysuckle (Lonicera sempervirens), a well-behaved, hummingbird-magnet vine, or another native like crossvine or Carolina jessamine. For large infestations in natural areas, local extension offices and invasive-plant programs can advise on region-specific control.

Not a food - the black berries are mildly toxic (the flower nectar is traditionally sipped, but that's no reason to plant it). Ecologically its impact is negative: it smothers and girdles the natives that support wildlife.

Japanese honeysuckle is not a food plant. The sweet nectar at the base of the flowers is famously sipped (a harmless childhood tradition in tiny amounts) and the dried flowers have a long history in herbal tea and traditional medicine in Asia (where the plant is jin yin hua) - but its black berries are mildly toxic (saponins) and shouldn't be eaten, and none of the flower lore is a reason to plant a serious invasive.

Ecologically, its impact is negative. By smothering and girdling shrubs and young trees and carpeting the forest floor, it kills or suppresses the native plants that anchor the food web, and its semi-evergreen winter growth gives it a competitive edge that lets it dominate. Its flowers do offer nectar to some pollinators and its berries feed the birds that spread it, but that's far outweighed by the diverse native plants it displaces - including the native coral honeysuckle and other natives that better support hummingbirds, native bees, and specialist insects. The meaningful 'nutrition' story is what it displaces: removing it and planting native honeysuckle or other natives restores both the fragrance and flowers you wanted and the far greater wildlife value it takes away.

Introduced from Asia in the 1800s as a fragrant ornamental and for erosion control and wildlife, Japanese honeysuckle escaped to become one of the most widespread invasive vines in the eastern US.

Japanese honeysuckle was introduced to the US from eastern Asia in the early 1800s (a widely grown form, 'Hall's honeysuckle,' dates to the mid-1800s) as a fragrant ornamental vine, and it was later widely planted and promoted for erosion control, bank stabilization, and wildlife cover and food. Beloved for its sweet scent and easy growth, it was planted across the South and East for well over a century, and its perfume is woven into Southern summer nostalgia.

The same easy vigor let it escape everywhere. Free of its natural controls, spread by birds and its own rooting runners, and given a competitive edge by its semi-evergreen habit, it became one of the most widespread and damaging invasive vines in the eastern US, smothering woods, edges, and fencerows across the region. Like other well-intentioned conservation plantings (and beloved ornamentals), it's a cautionary tale - and, happily, one with an easy fix: the native coral honeysuckle offers a fragrant, showy, hummingbird-friendly honeysuckle that stays in bounds, so choosing the native means keeping the charm without the invasion.

Confirm it (semi-evergreen twining vine, paired oval leaves, fragrant white-to-yellow flowers, black paired berries), tell it from the native, don't plant it, cut-and-treat it (it resprouts/roots), and grow coral honeysuckle instead.

Is this Japanese honeysuckle? Look for a fast, semi-evergreen twining vine with simple, oval, opposite (paired) leaves (often green in winter); intensely fragrant, two-lipped flowers in pairs that open white and age to yellow; and small black berries in pairs. How do I tell it from the native coral honeysuckle? Coral honeysuckle (L. sempervirens) has red-orange tubular flowers (not white/yellow), often has joined leaves just below the flower clusters, and has red berries - and it's the one you can plant. How do I remove it? Pull seedlings and rooted runners (get the roots); cut established vines off trees and treat the regrowth with foliar herbicide - cutting alone lets it resprout and root. Treating in late fall/mild winter, when it's green and natives are dormant, targets it selectively. Are the berries dangerous? They're mildly toxic - keep them from young children and pets. It grew back: expected - it resprouts and roots as it runs; persist for several seasons. What should I plant instead? Native coral honeysuckle, crossvine, or Carolina jessamine.

One of the most widespread invasives across the warm Southeast and eastern US (roughly zones 5-9), thriving in woods, edges, and fencerows; its semi-evergreen habit gives it a winter edge that milder climates amplify.

Japanese honeysuckle is one of the most widespread invasive vines across the warm Southeast and eastern US (roughly zones 5-9), thriving in sun to shade in woods, forest edges, fencerows, roadsides, streambanks, and old fields. It tolerates a wide range of soils and conditions and is broadly cold-hardy, though its worst impacts are in the milder South.

Its key climatic advantage is its semi-evergreen habit: in mild-winter regions it holds its leaves and keeps growing when native plants are dormant and bare, giving it a real competitive edge - one that milder climates amplify and that also creates a useful control window (late-season herbicide when it's green and natives aren't). Because it spreads by birds, rooting runners, and resprouting, it turns up almost everywhere within its broad range. Wherever you are in it, the guidance holds: never plant it, learn to tell it from the native coral honeysuckle, and control established vines - especially those girdling valuable shrubs and trees - while you can. And when you want a fragrant honeysuckle, reach for the native: it gives you the flowers and the hummingbirds in a plant that belongs here and behaves itself.