Wildflower Archive

prairie vine

American trumpet vine

Campsis radicans

American trumpet vine (Campsis radicans)1 of 2
WitteHeinrichFlora1868-061-Campsis radicans

Native to much of the USA

Eastern North America from Indiana, Ohio and New Jersey down to Florida and eastern Texas and north to South Dakota.

  • Light Full sun Sun tolerance
  • Moisture Dry to moist Moisture preference
  • Zones 4–10 Cold to heat range
  • Bloom May–Sep Flowering time
  • Height 3–4 in 8–10 cm
  • Life cycle Perennial Annual to perennial
Full details, see below

In the garden

A prairie vine for full sun and dry to moist soil. Its red flowers peak in June. At 3–4 in, it tucks into meadows and sunny borders. It shrugs off drought once established. Hardy in USDA zones 4–10.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

Hardiness zones

Find your zone:

When it blooms

The American trumpet vine's red flowers bloom May to September, peaking in June. This early-summer display draws bees and wasps.

May–SepJanFebMarAprMayJunJulAugSepOctNovDec

American trumpet vine blooms red, orange & yellowFoliage

Pollinators & wildlife

  • Bees Common Eastern Bumble Bee
    also Western Honey Bee, Brown-belted Bumble Bee, Two-spotted Bumble Bee +20 more American Bumble Bee, Pure Green Sweat bee, Bombus fervidus, Hunt's Bumble Bee, Two-spotted Longhorn Bee, Orange-legged Furrow Bee, Nevada Bumble Bee, Texas Leafcutter Bee, Bristle Sweat Bee, Squash Longhorn-Cuckoo, Cresson's Sweat Bee, Experienced Sweat Bee, Lasioglossum cinctipes, Nomada affabilis, Yellow-spotted Cuckoo Nomad Bee, Megachile policaris, Amegilla garrula, Sonoran Bumble Bee, Pubescent Carpenter Bee, Zephyr Sweat Bee
  • Wasps Bald-faced Hornet
    also Eastern Yellowjacket, Fraternal Potter Wasp, Western Yellowjacket +14 more Four-toothed Mason Wasp, Southern Yellowjacket, Common Aerial Yellowjacket, Perennial Mason Wasp, European tube wasp, Euodynerus megaera, Euodynerus hidalgo boreoorientalis, Parancistrocerus leionotus, Parancistrocerus histrio, Mediterranean Potter Wasp, Yellow-legged Hornet, Vespula vidua, German Yellowjacket, Polistes exclamans
  • Butterflies Red Admiral
    also Pearl Crescent, Pipevine Swallowtail, Viceroy +3 more Cloudless Sulphur, Red-banded Hairstreak, Abaeis nicippe
  • Also visited by
    • Flower flies:
      Margined Calligrapher, Eastern Calligrapher +5 more Thick-legged Hover Fly, Eastern Flower Fly, Eastern Catkin Fly, Maize Calligrapher, Pseudodoros clavatus
    • Hummingbirds:
      Ruby-throated Hummingbird, Broad-billed Hummingbird +1 more Black-chinned Hummingbird
    • Moths:
      Carolina Sphinx, Trumpet Vine Sphinx +2 more Porcelain Gray, Four-spotted Palpita Moth
    • Beetles: Spotted Cucumber Beetle, Ashy Gray Lady Beetle
    • Birds: Baltimore Oriole

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
PrairieThe wild plant community it grows in.
Native range
Much of the USAUnited States (29): AL, AR, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MD, MI, MO, MS, NC, ND, NJ, NY, OH, OK, PA, SC, SD, TN, TX, VA, WV. Where it grows wild on its own, by state and province.
Native distribution
Eastern North America from Indiana, Ohio and New Jersey down to Florida and eastern Texas and north to South Dakota.The same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Full sunHow much sun it takes, from full sun to full shade.
Moisture
Dry to moistThe soil dampness it prefers, from dry to wet.
Hardiness zones
USDA 4–10 · Canadian 5–7The cold-to-heat climate range it survives.
Soil
Various well-drained soils. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Limestone-based, Caliche typeThe soils it grows in naturally.
Soil texture
Light to heavy (sandy to clay)The soil grade it prefers, from sand to clay.
Soil pH
4.9–6.8The acidity to alkalinity it tolerates (7 is neutral).
Soil quality
LowHow rich a soil it needs. Many natives prefer lean soil and flop in rich beds.
Water use
LowHow thirsty it is, a rough guide to how often to water.
Drought tolerance
HighRelative to plants of the same type and region, inferred from where it grows, not a days-without-water figure.
Salinity tolerance
NoneHow well it copes with salty soil, near roads or the coast.
Lime (CaCO₃) tolerance
HighHow well it copes with chalky, lime-rich soil.

Growth & form

Height
3–4 in (8–10 cm)Typical mature height.
Life cycle
PerennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).
Growth rate
RapidA relative ranking versus other plants of the same type (USDA), not an absolute rate.
Shape
ClimbingIts overall silhouette.
Root depth
14+ in (36+ cm)How far the roots reach, a guide to drought resilience and transplanting.

Flowers, foliage & fruit

Type
VineWhat kind of plant it is.
Bloom
May–SepWhen it flowers.
Flower color
Red, Orange, YellowThe bloom color, or colors.
Fruit/Seeds
ripens Jan–NovThe seed or fruit it sets after flowering.
Toxicity
None knownWhether any part is poisonous to people or pets.

Propagation & seed

Cold stratification
Required (cold, moist)Whether seed needs a cold, moist spell before it will germinate.
Propagation
Bare root, container, cuttings, seedHow to start new plants.
Seed
~0.1 million seeds per poundNotes on the seed and how to sow it.
Seed spread rate
SlowHow readily it self-sows. Slow or none means well-behaved, not a spreader.
Seedling vigor
HighHow strongly young seedlings establish.
Vegetative spread
ModerateWhether it creeps outward or stays put in a clump.