How to grow wonga wonga vine
Overview
Pandorea pandorana, known as wonga wonga vine, is a fast-growing Australian native climber with creamy trumpet flowers and lush foliage. It is grown to cover fences, pergolas, and arbors. Prune hard after flowering to maintain shape and encourage dense growth.
Varieties
- Alba — White flowers with a yellow throat; vigorous and free-flowering.
- Snow Bells — Pure white bell-shaped blooms; compact growth suitable for smaller spaces.
- Rosea — Pink-flushed flowers; attractive against dark green foliage.
Soil Preparation
Prefers loamy, well-drained soil with pH 6.0–7.0. Incorporate compost or aged manure at planting. Avoid heavy clay that holds water. If soil is sandy, add organic matter to improve moisture retention.
Growing Guide
Plant in part shade to filtered sun with well-drained soil. Space 2–3 m apart along supports. Dig a hole twice the root ball, amend with organic matter, and water regularly until established. Train young stems onto trellis or wire. Mulch around the base to conserve moisture and suppress weeds. Avoid waterlogged conditions.
Sowing
Scarify seeds or soak in water overnight before sowing. Sow 5 mm deep in seed-raising mix and keep moist at 20–25°C. Germination occurs in 2–4 weeks. Transplant seedlings when 10 cm tall. Direct sowing is also possible in spring.
Care
Apply a balanced native fertiliser in early spring as new growth appears. Prune hard after flowering to control size and promote branching. Remove dead or tangled stems in winter. Train new shoots onto supports regularly.
Companion Planting
Pair with Hardenbergia violacea (purple coral pea) or Clematis aristata for a layered native screen. Underplant with low shrubs like Grevillea or Lomandra. Avoid positioning near gutters or lightweight structures as the vine can become heavy with age.
Common Pests & Risks
Scale insects may cause sticky residue and sooty mould; treat with horticultural oil. Caterpillars can chew leaves; handpick or apply Bacillus thuringiensis. Monitor for powdery mildew in humid conditions; improve air circulation and avoid overhead watering.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce watering and improve soil structure. Brown leaf edges: underwatering or salt build-up; water deeply and mulch. Poor flowering: too much shade or lack of pruning after flowering; increase light and prune. Caterpillar damage: small holes in leaves; apply Dipel or handpick. Scale insects: sticky residue on leaves; treat with horticultural oil.