American Trumpet Vine (Campsis radicans)

Campsis radicans, the American trumpet vine, is a vigorous deciduous vine with showy, trumpet-shaped orange-red flowers that attract hummingbirds.

Above information is sourced from Wikipedia

Sunlight

Full Sun

Watering

Moderate

Soil

Well-drained

Temperature

Adaptable

Habitat

Outdoor

Fertilizer

Low

Care Requirements

Light

Full Sun

Thrives in full sun for best flowering. Can tolerate partial shade, but flowering will be reduced.

Watering

Moderate

Prefers consistently moist soil, but tolerates some drought once established. Avoid waterlogging.

Soil

Well-drained

Temperature

Adaptable

Hardy in USDA zones 4-10. Prefers warm temperatures for optimal growth and flowering but is cold-tolerant.

Habitat

Outdoor

Fertilizing

Low

Benefits from light feeding in spring. Avoid over-fertilization, which can reduce flowering.

Plant Overview

Plant Type

Vine

Plant Category

Ornamental

Plant Place Type

Garden, Pot

Plant Environment

Outdoor

Lifespan

Perennial

Plant Height

9-12 m

Spread

9-12 m

Growth Rate

Fast

Dormancy

Yes

Leaf Color

Green

Leaf Type

Compound

Flower Size

5-8 cm

Optimal Sunlight Lux

60000

Weed Status

Yes

Image Gallery

Flowering & Fruiting Cycles

Monthly activity intensity for bloom and fruit across both hemispheres.

Northern hemisphere

Flowering & fruiting calendar

Peak bloom · JulPeak fruit · Oct

FloweringFruiting

Southern hemisphere

Flowering & fruiting calendar

Peak bloom · JanPeak fruit · Nov

FloweringFruiting

Taxonomy

kingdomPlantae
divisionTracheophyta
classMagnoliopsida
orderLamiales
familyBignoniaceae
genusCampsis
speciesCampsis radicans

Toxicity

Toxic for humans

Yes

Rating: 2/5

Toxic for pets

Yes

Rating: 2/5

Edible

Mildly toxic if ingested, may cause skin irritation.

Additional Care Tips

Water regularly, especially when young or during dry periods. Aim for consistently moist soil but avoid waterlogging. Reduce watering in winter to allow the plant to enter dormancy. Established plants are quite drought-tolerant once they have settled in.

Prune in late winter or early spring to control size and shape. Remove dead, damaged, or crossing branches. As it blooms on new wood, pruning in late winter encourages vigorous growth and abundant flowers. Deadhead spent blooms to encourage a second flush.

Easily propagated from cuttings taken in summer or from root suckers. Cuttings should be 10-15 cm long and placed in moist soil or water to root. Root suckers can be carefully dug up and transplanted, ensuring they have some roots attached.

Repot young plants every 1-2 years in spring to provide fresh soil and space for root growth. Established plants in the ground rarely need repotting. If container-grown plants become root-bound, move them to a slightly larger pot with well-draining potting mix.

FAQs

What are the optimal growing conditions for Campsis radicans?

American trumpet vine thrives in full sun to partial shade and well-drained soil. It is adaptable to various soil types but prefers moist conditions.

How should I control the spread of Campsis radicans?

Due to its aggressive nature, it's crucial to prune regularly to manage its size and prevent it from spreading into unwanted areas. Consider planting in containers or areas where its spread can be contained.

When does Campsis radicans bloom?

The flowers typically appear from mid-summer through early fall, usually from July to September.

Is Campsis radicans toxic to pets?

The ASPCA lists Campsis radicans as non-toxic to cats, dogs, and horses.

How can I propagate Campsis radicans?

Propagation can be done through seeds, cuttings, or root division. Cuttings taken in summer root readily.

Care Requirements

Light

Full Sun

Thrives in full sun for best flowering. Can tolerate partial shade, but flowering will be reduced.

Watering

Moderate

Prefers consistently moist soil, but tolerates some drought once established. Avoid waterlogging.

Soil

Well-drained

Temperature

Adaptable

Hardy in USDA zones 4-10. Prefers warm temperatures for optimal growth and flowering but is cold-tolerant.

Habitat

Outdoor

Fertilizing

Low

Benefits from light feeding in spring. Avoid over-fertilization, which can reduce flowering.

Additional Care Tips

FAQs

What are the optimal growing conditions for Campsis radicans?

American trumpet vine thrives in full sun to partial shade and well-drained soil. It is adaptable to various soil types but prefers moist conditions.