How to grow stephanotis
Overview
Stephanotis floribunda, known as Madagascar jasmine, is a twining vine grown for its intensely fragrant, white tubular flowers. It is used to cover trellises, pergolas, and fences, adding vertical interest and scent to warm, sheltered gardens. Frost is its main limitation; protect it or choose a subtropical/tropical zone.
Soil Preparation
Stephanotis prefers slightly acidic to neutral soil (pH 6.0–7.0). Enrich with well-rotted compost or aged cow manure before planting. Ensure excellent drainage—if heavy clay, mound the bed or use a raised container. A layer of organic mulch helps retain moisture and cool the roots.
Growing Guide
Plant stephanotis in a spot with bright, filtered light or morning sun and afternoon shade. Soil must be free-draining and rich in organic matter; add compost and aged manure before planting. Space plants 1–2 m apart along a sturdy support. Water regularly to keep the root zone evenly moist, but never waterlogged. In cool districts, wait until after the last frost and consider positioning against a north- or west-facing wall for warmth.
Care
Feed monthly from spring to late summer with a balanced liquid fertiliser (e.g., 10-10-10) to promote flowering. Prune after the main flowering flush to control size and remove dead or tangled stems. Train new shoots onto the support every few weeks during active growth.
Companion Planting
Plant near patios, doorways, or seating areas to enjoy its perfume. Good companions include other scented climbers like jasmine (Jasminum polyanthum) and gardenia (Gardenia augusta), or flowering shrubs such as hibiscus. Avoid positioning near vigorous, heavy vines that may smother its growth, e.g., wisteria.
Common Pests & Risks
Scale insects, mealybugs, and spider mites are the most common pests. Treat scale with horticultural oil or soap spray on stems and leaf undersides. Mealybugs can be dabbed with alcohol on a cotton bud. Mites are encouraged by dry air; improve humidity and rinse foliage. Check new growth regularly.
Harvesting
Harvest stephanotis flowers as cut stems when the first buds begin to open. They have a long vase life (up to 2 weeks) and release a strong sweet fragrance. Snip early in the morning, place in water immediately, and condition overnight before arranging.
Troubleshooting
Yellow leaves: often from overwatering or poor drainage—let soil dry slightly between waters. Brown leaf edges: low humidity or salt buildup—mist regularly and flush soil. No flowers: insufficient light—move to a brighter spot but still protect from harsh sun. Leaf drop: cold stress or underwatering—check temperature and water consistently. Sticky residue on leaves: scale or mealybug infestation—treat with oil or soap.