Trumpet Vine (Campsis radicans): Growing & Taming a Hummingbird Magnet

Trumpet vine (Campsis radicans, syn. Bignonia capreolata) is a vigorous, deciduous climber native to the southeastern U.S. Its showy, trumpet-shaped flowers in orange-red (also yellow or cream) bloom all summer, attracting hummingbirds. Drought-tolerant and hardy to -20°F, it can reach 30 feet—but its aggressive habit demands smart placement.

Planting

• Light: Full to partial sun.
• Soil: Loamy, enriched with compost; avoid high-salt amendments like mushroom compost.
• Method: Plant nursery-grown containers. Dig a hole twice the pot width, same depth. Space multiple vines 2 feet apart. Water well after planting.
• Containment: Grow on a sturdy fence, stone wall, or large bottomless container sunk in the ground. Avoid planting near buildings.

Watering

Water deeply but infrequently. Check moisture 6 inches down; if a handful of soil holds a ball, skip watering. Overwatering encourages weak growth.

Fertilizing

Apply a phosphorus-rich fertilizer before bloom. Avoid excessive nitrogen, which promotes foliage over flowers.

Pruning & Control

• Prune hard in late winter or early spring to keep size in check; vines regrow quickly.
• Remove root suckers promptly.
• Wear gloves and long sleeves—some people develop skin irritation from the sap.

With disciplined management, trumpet vine becomes a stunning, wildlife-friendly feature rather than a garden bully.