Trumpet honeysuckle

Appalachian-Blue Ridge forests

Arizona Mountains forests

Atlantic coastal pine barrens

Blue Mountains forests

Central Pacific Northwest coastal forests

Central Tallgrass prairie

Central-Southern Cascades Forests

What it needs

Conditions

Light

Full sun / Part shade

Water

Moderate water

Spacing

4 ft

Habit

Twining woody vine, deciduous in the north and semi-evergreen from about zone 8 south, climbing 8 to 15 feet on a support and occasionally reaching 20. The published height figures disagree and the disagreement is informative: Missouri Botanical Garden gives 8 to 15 feet with a 3 to 6 foot spread, the Lady Bird Johnson Wildflower Center gives 3 to 20 feet, and the difference is mostly what the plant was given to climb. It ascends by wrapping its stems around a support, so it needs something narrow enough to grip - wire, trellis lath, a fence rail, another shrub - and it will sprawl into a loose ground cover if it is given nothing. The leaves are opposite, oval, glossy, bluish-green and glaucous beneath, and the top pair below each flower cluster is CONNATE, fused around the stem into a single disc that the flower whorl sits on; that fused collar is the quickest field mark for the species. Young bark is fuzzy and green, ageing to light brown that peels in papery orange-brown strips.

Care tips

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Do not buy it for the fragrance, because it has none. Missouri Botanical Garden describes the flowers as large and non-fragrant, and every scented honeysuckle in the trade for eastern North America - Japanese, Tatarian, winter honeysuckle - is an invasive plant. If the scent is genuinely the point, the honest options are a native clematis or a climbing rose, not a honeysuckle.

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Give it something to twine around before you plant it. This is a twiner, not a clinger: it wraps its stems around wire, lath, rails and thin branches and cannot attach to a flat wall at all. Fixing wires up a wall before planting takes an hour; retrofitting them behind an established vine takes an afternoon and costs a season of growth.

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Prune immediately after the main flush, and prune by renewal. Next year's flowers form on wood made this year, so a late-winter haircut removes the display. Take one or two of the oldest stems right out at the base each year instead of shearing the whole vine, which is what stops it going bare-legged with all its flowers at the top.

Lifecycle

Planting

Plant in spring or autumn in average, medium-moisture, well-drained soil, in full sun to part shade. Missouri Botanical Garden is explicit that the best flowering comes in full sun on organically rich humusy ground, and that the vine needs a structure to twine on unless it is being grown as a sprawling ground cover. The Wildflower Center records it on sand, loam and clay, and on both acid and lime-rich soils, so soil chemistry is not the constraint. Air movement IS: the same source names light, good air circulation and adequate drainage as the conditions that keep powdery mildew off it, which in practice means not planting it flat against a still, shaded wall.

Transplanting

Moves readily as container stock while young. An established vine is a different job, because the root system is substantial and the top growth has to be cut back hard to match what the roots survive - easier to take cuttings and start again than to lift a ten-year-old plant.

Early growth

Water through the first season while roots establish, then it is fairly drought-tolerant. Train the stems onto the support by hand for the first two years; a twining vine only climbs what it can wrap around, so it will not attach to a flat masonry wall the way ivy does, and it needs wire or lath in front of one. Missouri Botanical Garden rates maintenance LOW and that is fair - the only timed job is pruning immediately after the main flush, because next year's flowers come on wood made this year.

Maturity

Missouri Botanical Garden lists no serious insect or disease problems, then names the two that actually turn up: powdery mildew and leaf spots, particularly in hot and humid summer climates such as St. Louis, plus aphids and leaf miners. Aphids are the routine one - they colonise the soft new growth and the flower buds, and a hard hose spray or a tolerated population of lady beetles and lacewings handles them better than spraying does, since spraying a hummingbird plant during bloom is a poor trade. Renewal-prune by removing the oldest stems at the base rather than shearing the whole vine, which is what leaves the classic bare-legged honeysuckle with all its flowers at gutter height.

Propagation

Softwood or semi-hardwood cuttings taken from summer into autumn are the easy route and the Wildflower Center calls them the easiest. Seed works too but is slower: collect the berries in late summer or early autumn, clean the pulp off, and give the seed two to three months of moist cold at about 40°F before sowing. Layering a low stem into the soil is the least effort of all on an established plant. Note that most trumpet honeysuckle sold is a named clone - Major Wheeler, Cedar Lane, John Clayton for the yellow-flowered form - and those come true only from cuttings.

Pollination

Self-fertile (better with a partner)

A single vine fruits, so no second plant is needed, and that is the practical answer most gardeners want. The real limit on the berry crop is not compatibility but VISITATION. The flower is a 5 cm narrow tube with no landing platform, no scent and a red exterior, which is the classic bird-pollination syndrome, and the ruby-throated hummingbird is the pollinator that matches it: it takes nectar from the base of the tube and carries pollen on its forehead from cluster to cluster. Neither Missouri Botanical Garden nor the Wildflower Center publishes a breeding-system experiment for this species, so nothing stronger than self-compatible-and-visitation-limited is claimed here. What follows from it is concrete - a vine in an open sunny position on a hummingbird flight line sets fruit heavily, and the same vine buried in shade behind a fence sets very little, and the difference is the birds rather than the flowers.

Plants don't grow alone

Larval host

Butterfly

Spring azure (Celastrina ladon)

The Wildflower Center records trumpet honeysuckle as a larval host for the spring azure, which is a real and specific value the invasive bush honeysuckles do not offer. Worth knowing how azure larvae feed: they eat flower buds, blossoms and developing fruit rather than leaves, so caterpillar damage here shows up as chewed flower clusters rather than skeletonised foliage, and it is not a reason to spray. Note that Celastrina ladon covers a complex of closely related azures rather than one tidy species.

Larval host

Moth

Hummingbird clearwing moth (Hemaris thysbe)

Wired with the caveat stated plainly. The larval record the Wildflower Center publishes for this plant is the SNOWBERRY CLEARWING, Hemaris diffinis, which has no entry in this wildlife catalog and so cannot be linked; the hummingbird clearwing, Hemaris thysbe, is its close relative and does use woody hosts in the honeysuckle group, which is the basis for the link here rather than a published record on Lonicera sempervirens. Both are day-flying sphinx moths that hover at flowers like small hummingbirds, and both will also take nectar at this vine - the deep tube suits a long proboscis as well as it suits a bird bill.

Pollinates

Bird

Ruby-throated hummingbird (Archilochus colubris)

This is the reason the plant exists in the form it does. Long narrow red tube, no scent, no landing platform, copious dilute nectar at the base: every one of those traits is a filter that excludes most insects and admits a hovering bird. Missouri Botanical Garden lists hummingbirds under Attracts, the Wildflower Center names them first among the flower visitors, and the bloom timing lines up with the ruby-throat's movements - March on the Gulf coast as birds arrive, May and June further north, with repeat flushes into the season when adults are feeding young. If you plant one thing in eastern North America for ruby-throated hummingbirds, this is the strongest single candidate.

Nectar forage

Bee

Common eastern bumblebee (Bombus impatiens)

The Wildflower Center flags this species as of special value to bumble bees, which is the Xerces Society assessment carried on that profile. A bumble bee is one of the few insects with the tongue length and the strength to work a 5 cm tube legitimately, and where it cannot reach it bites through the base of the corolla and robs the nectar directly - the small slit near the flower base on an older cluster is that, not damage.

Nectar forage

Bee

European honeybee (Apis mellifera)

Both Missouri Botanical Garden and the Wildflower Center list bees among the visitors, but the honey bee is a poor fit for the flower and the mechanism is worth stating: its tongue is roughly 0.2 inches against a corolla tube of 1.6 to 2 inches, so it cannot reach the nectar from the mouth of the flower. What honey bees actually do here is take pollen at the anthers and work the holes that bumble bees have already bitten at the base. Marked plausible because the general "attracts bees" line is documented while honey bee foraging on this species specifically is inference from flower structure.

Nectar forage

Butterfly

Eastern tiger swallowtail (Papilio glaucus)

Butterflies appear under Attracts on both primary sources, and the large eastern swallowtails are the ones with the proboscis length to reach the base of a 5 cm tube while feeding on the wing. Marked plausible because the sources say butterflies rather than naming a species, and because a nodding red bird-flower is a secondary target for a swallowtail rather than a preferred one.

Fruit forage

Bird

American robin (Turdus migratorius)

Robins are named directly among the birds that take the fruit. The berries ripen in late summer and early autumn and go quickly, which is the honest contrast with the invasive bush honeysuckles: those carry a heavier, longer-lasting, carbohydrate-rich crop that looks better in a garden and is worse food, being low in the fat migrating birds actually need.

Fruit forage

Bird

Eastern songbirds (multi-species) (multiple species (Passeriformes))

The Wildflower Center names quail, finches and thrushes alongside robins as consumers of the fruit, and Wikipedia specifies purple finch. Neither northern bobwhite nor purple finch has an entry in this wildlife catalog, so they are named here in prose and covered by this general songbird link rather than being wired individually. The semi-evergreen tangle of stems also gives small birds nesting and roosting cover on a structure that would otherwise be bare.

For people

Not eaten by humans

Not a food plant. Missouri Botanical Garden calls the red berries inedible; like most honeysuckle fruit they contain saponins and can cause vomiting and diarrhoea in quantity, which is a nuisance for an adult and a genuine reason to teach a child not to graze the vine. There is no nectar-sucking tradition attached to this species either - the flower children remember pulling the stamen through for a drop of nectar is Japanese honeysuckle, the invasive one, which makes the memory an unhelpful guide. Grow this for the birds and treat the fruit as bird food only.

Native range

Native

Naturalized

Native across 32 US states; naturalized in 1 US state.

Worldwide native range.

Native ecoregions

Naturally belongs in 17 ecoregions - its native range crosses a state or province each one spans (not necessarily this exact habitat).

Appalachian mixed mesophytic forests

Appalachian-Blue Ridge forests

Atlantic coastal pine barrens

Central Tallgrass prairie

Chihuahuan desert

Cross-Timbers savanna-woodland

Eastern Great Lakes lowland forests

Edwards Plateau savanna

Flint Hills tallgrass prairie

Mississippi lowland forests

A rounded, multi-stemmed deciduous shrub native across eastern and central North America, grown for its edible nuts and its season-opening catkins. Showy 2-3 inch yellowish-brown male catkins dangle from bare branches in early spring before the ovate, double-toothed leaves emerge; small egg-shaped edible nuts ripen inside leafy husks by mid- to late summer. Easygoing in average soil and tolerant of clay and black walnut, it suckers into thickets that screen and shelter wildlife.

Climate notes

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Native across the eastern United States, concentrated in the southeast and running north to New England and west to Texas, Oklahoma, Kansas and Iowa, in woodland edges, thickets, fencerows and coastal woods. State the provenance honestly: POWO returned HTTP 403 for every species in this wave except Cornus amomum, so the WGSRPD range mapped here was read from World Checklist of Vascular Plants rows served through GBIF - the same Kew dataset behind POWO - and verified against that one species POWO did answer for.

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The Kew rows flag THREE introduced occurrences, and they are excluded from the native range above: Illinois, Ontario and Quebec. That exclusion is worth naming because it is the whole difference between this record and its two invasive siblings. On Lonicera tatarica and Lonicera fragrantissima the introduced rows across eastern North America ARE the plant as gardeners meet it; here there are three, they sit at the northern edge of a range that is otherwise continuous and native, and they are consistent with a garden plant creeping a little past its wild limit rather than with an invasion.

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One consequence shows up on the native map. The Wildflower Center lists 33 states in its per-state distribution, including Illinois; the Kew native rows list 32 and put Illinois in the introduced column. The map therefore reads Illinois as established rather than native, and that is the two datasets disagreeing rather than an error - one is an occurrence list, the other is a native-status judgement.

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Published hardiness figures disagree and the spread is real. Missouri Botanical Garden gives Zone 4 to 9 and is followed here as the primary source; Wikipedia gives 5 to 9; the Wildflower Center works in 6 to 9. The safe reading is that the plant is reliably hardy to zone 5, likely to zone 4 in a sheltered site with snow cover, and that gardeners at the cold end should expect top growth to die back and regrow rather than a clean overwinter. Maine sits at the northern limit and lists the species as endangered there.

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Humidity affects the leaves, not the survival. Missouri Botanical Garden reports powdery mildew and leaf spots particularly in hot humid summer climates like St. Louis, and the Wildflower Center prescribes light, air circulation and drainage against the same problem. This is a siting instruction: an open trellis with air on both sides stays clean where the same vine flat against a shaded wall does not. It is not a reason to avoid the plant in the South, where it is native and where it holds its leaves through the winter.

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Missouri Botanical Garden describes populations in central and southern Missouri as escapes from gardens, naturalised along roadsides, stream banks and thickets, while the Kew rows treat Missouri as native. Both can be defended - the species is native to the state and also widely planted in it - and the honest position is that the record follows Kew for the native map and reports the MBG reading here rather than quietly dropping it.

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.

Corylus americana

American hazelnut

A native eastern + central North American multi-stemmed deciduous shrub with dentate (toothed) foliage, white spring flower clusters, blue-black drupes, and reliable fall color. Especially valued for wildlife - among the most-cited native shrubs for fall-migration bird forage.

A native eastern North American multi-stemmed deciduous shrub or small tree with white spring flower clusters, edible dark-blue drupes, and red-purple fall foliage. Among the most adaptable native viburnums; tolerates a wide range of soil + light conditions.

Full sun / Part shade

A small native tree with white spring flowers, edible summer berries, and copper to red fall color.

Full sun / Part shade

Amelanchier canadensis

Canadian serviceberry

A suckering, thicket-forming native cherry that reads as a large shrub or small tree across most of North America. Fragrant white flowers open in elongated drooping racemes in spring, followed by dense pendulous clusters of pea-sized cherries that ripen red to dark purple-black in late summer. The astringent fruit is technically edible after processing, and the plant is a workhorse for wildlife - feeding birds and mammals and hosting sphinx-moth larvae.

Nannyberry is the viburnum you can walk under. Missouri Botanical Garden describes a large, upright, multi-stemmed, suckering shrub of 10 to 18 feet that may also be grown as a single-trunk tree reaching 30 feet, and that second option is most of the reason to choose it: in a group where almost everything tops out as a rounded 6-to-10-foot mass, this is the one that can be limbed up into a small tree with a canopy, a trunk and usable space beneath. It is also the northernmost of them. MBG rates it Zone 2 to 8, the native range runs from New Brunswick west to southeastern Saskatchewan, and Wikipedia calls it one of the best small trees of eastern America for parks and gardens in regions of extreme winter cold. The fruit is the second argument. Flat-topped white cymes up to 5 inches across open in May and give way to blue-black drupes on reddish stalks that hang into winter, and unlike most of the genus they are genuinely good to eat - thick-skinned, sweet and juicy in Wikipedia's description, eaten off the bush or made into jam per MBG. Two caveats belong up front. The first is mildew: MBG lists mildew and leaf spot as occasional problems and the Lady Bird Johnson Wildflower Center says outright that it sometimes develops mildew in shady areas, so this is a plant to give sun and moving air rather than a stuffy corner. The second is that it colonises by two routes at once. It sends up root suckers, which MBG says to remove unless naturalisation is what you want, and the Wildflower Center adds that old branches arch down and take root where they touch. Left alone at the back of a property that behaviour builds a thicket for free; in a tended border it is a job that returns every year.