Trumpet vine is a fast-growing, deciduous vine that can grow as tall as 40 feet and is covered by dense green foliage. Showy red, orange or yellow trumpet-shaped blooms will appear in summer and will continue to bloom and attract hummingbirds until early autumn. When the blooms wilt and drop off, the empty spaces will be filled by long seed pods that will remain on the vine all winter.
Select a spot where the trumpet vine will be exposed to full sunlight, and where the vine will be supported by a wall or a fence. Although trumpet vine will tolerate partial shade, full sunlight will bring out bigger, brighter blooms. Trumpet vine will thrive in nearly any soil type as long as it drains well and isn't soggy.
Cultivate the soil to a depth of 6 to 8 inches using a shovel or a garden fork. Add 2 to 3 inches of compost or manure and work it into the soil.
Plant trumpet vine seeds directly in the soil, after all danger of frost has passed. Cover the seeds with 1/4 inch of soil. If you prefer, you can purchase a young trumpet vine plant from a greenhouse or nursery. Dig a hole as tall as the plant's root ball and at least twice as wide. Plant the vine in the hole and tamp the soil lightly around the roots.
Keep the soil moist until the trumpet vine is established and showing signs of growth. After the plant is established, it will be drought tolerant and will need water only during hot, dry weather.
Install a sturdy trellis if you haven't planted the vine near a wall or fence. The plant will grow quickly and will require support.
Prune the trumpet vine in late fall or early spring to keep rampant growth in check. Remove suckers with pruners or a lawn mower. Don't attempt to dig suckers, as digging will create more suckers. Gather seed pods before they open to prevent the trumpet vine from self-seeding.