This easy-to-grow plant has pinnately compound leaves with five to nine diamond-shaped leaflets. From fall to spring, it produces clusters of trumpet-shaped yellow, apricot, red, or orange flowers. Cape honeysuckle is a fast-grower that can grow anywhere from 13- to 25-inches tall in its first year after a successful spring planting. As a shrub, it matures at ten feet tall, but it can also ramble as a climbing vine as much as 30 feet or more. You can grow it in a container if space is limited or if you want to maintain it at a manageable size,
Light
Cape honeysuckle is a tropical plant that grows well in full sun or partial shade. In its native habitat, Cape honeysuckle is often found growing in dappled light in the forest understory. In extremely hot climates, it might actually do better in partial shade locations. The denser the shade, however, the less vigorous the blooming.
Soil
This plant does well in almost any soil type provided it is kept moist and the soil is well-drained. Don’t fret about the pH of your soil too much, as this plant can handle both acidic and alkaline soils. It also grows well in salty locations like coastal regions.
Water
Water your cape honeysuckle weekly (about one inch) if you are growing it in full sun, or just once or twice a month if it is grown in shade. After a year of regular watering, the roots should be established enough to provide drought tolerance.
Temperature and Humidity
Cape honeysuckle is a tropical plant that thrives in USDA cold hardiness zones 9–11. It is heat and drought tolerant, but its branches and leaves tend to die back at temperatures under 25 degrees Fahrenheit.
Fertilizer
If you’ve tested the soil and determined it is lacking in nutrients, go ahead and feed it annually with a balanced fertilizer. In most cases, though, feeding is not needed for this vigorous grower.
Types of Cape Honeysuckle
The various named cultivars of cape honeysuckle have identical growth habits but have been bred to have different flower colors:
‘Aurea’ features golden-yellow flowers. It is a more heat-tolerant variety.‘Coccinea’ has bright red or scarlet blooms.‘Salmonea’ produces orange or pink flowers.‘Apricot’ is a more compact version with apricot-orange flowers.
Pruning
Pruning your cape honeysuckle depends on the growth habit you want to maintain. If you’re growing it as a hedge, trimming might be required on a regular basis because the plant grows quickly. Cut it back to the ground every three to four years in the spring (or as needed) to prevent it from sprawling. At the beginning of spring, remove branches that have been damaged by frost. This plant freely produces suckers. If you don’t want this plant to spread, remove the suckers immediately. If you are growing this plant as a vine, less maintenance is required to keep it trained to grow onto its support structure.
Propagating Cape Honeysuckle
Because Cape honeysuckle produces suckers, the plant will naturally propagate itself for you. You can also propagate the plant with softwood cuttings. To propagate with suckers: To propagate with softwood cuttings:
How to Grow Cape Honeysuckle From Seed
Cape honeysuckle grows well from seeds collected from the dried bean-like pods left by the faded flowers. Plant the seeds in shallow trays and cover them in sand or seed-starting mix. Seeds will germinate in 6 to 21 days. Plant seedlings once they have developed sturdy roots. Cape honeysuckle will bloom in the second year when grown from seed.
Potting and Repotting Cape Honeysuckle
Cape honeysuckle makes a great container plant if you live in an area with the tropical weather they crave. Plant them in pots with good-sized drainage holes, filled with standard potting mix, and increase the container size by two inches each time you repot—whenever roots are evident growing out the drainage holes. Bring potted plants indoors in colder months to protect them for the next season.
Overwintering
Within its recognized hardiness zone, cape honeysuckle requires no special treatment for the winter months. In USDA cold hardiness zone 8, it is sometimes possible to keep the plant growing in the garden if you give it a thick layer or protective mulch over the winter—these plants don’t like temperatures below 40 degrees Fahrenheit and will die back when temperatures reach 25 degrees. If your plant is growing in a container, bring it indoors before the first frost and keep it by a bright window. If any branches are damaged by frost, wait until spring to trim them off before moving the plant outdoors.
Common Pests and Plant Diseases
Cape honeysuckle attracts aphids and scale insects, both of which enjoy the plant’s new growth and foliage. Spider mites and whiteflies might also be a problem for plants grown indoors. You can rid your plant of these pests with insecticidal soap.
How to Get Cape Honeysuckle to Bloom
Cape honeysuckle will generally bloom vigorously from fall to spring if it is receiving enough sun. Even in partial shade, it should produce ample flowers. Excessive shade, though, will reduce its blossoms. If all other circumstances are favorable but your plant still doesn’t bloom, try giving it a late summer dose of balanced fertilizer prior to the fall/winter blooming season.
Common Problems With Cape Honeysuckle
The most common problem with cape honeysuckle (perhaps the only problem) is that it can grow rather unruly if you don’t prune it back frequently. This is especially problematic if you are trying to grow them as hedge plants. In addition to cutting back the actively growing stems, be on the lookout for runners and suckers that can take over a garden. Rampant growth is most troublesome in warm, wet climates. Withholding water is one strategy to keep the plant under control. Aside from merely controlling its size, frequent pruning will keep the plant dense and full. Untended, these plants can get leggy and unattractively sparse.
Leaf Scorch
Leaves that turn yellow and brown before falling off can be caused by a number of cultural problems: frost, too much wind or sun, or nutrient deficiencies. Diagnosis by a professional—or at least a soil analysis might be needed.
