How to grow climbing rose
Overview
Rosa banksiae, commonly known as Lady Banks' rose, is a vigorous, nearly thornless climbing rose from China. It is grown to soften vertical structures like arches, fences, and pergolas, adding lush, layered height to the garden. Key to success is training long canes onto supports and pruning after flowering to maintain shape.
Varieties
- Rosa banksiae 'Lutea' — The most common form in Australia, with pale yellow, double flowers and a light fragrance.
- Rosa banksiae 'Alba Plena' — White, double flowers; very vigorous and thornless, ideal for large structures.
- Rosa banksiae 'Banksiae' — The species form, with single white flowers and a strong, sweet scent.
Soil Preparation
Climbing rose prefers slightly acidic to neutral soil (pH 6.0–7.0). Improve heavy clay with gypsum and compost; add sand to sandy soils for better moisture retention. Ensure excellent drainage by raising beds or adding gravel. Incorporate well-rotted manure or worm castings before planting.
Growing Guide
Plant climbing rose in full sun with well-drained soil enriched with organic matter. Space plants 2–3 m apart for walls or 1–2 m apart on arches. Dig a hole 50 cm wide and deep, mix in compost and a handful of bone meal. Plant at the same depth as the nursery pot, water in well, and mulch to 5 cm deep. Train main canes horizontally to encourage lateral flowering shoots.
Care
Feed with a balanced rose fertiliser (e.g., 10-10-10) in early spring and again after the first flush of flowers. Prune spent blooms and remove one-third of old canes in late winter to stimulate new growth. Tie in new canes every 2–3 weeks during the growing season to maintain shape and airflow.
Companion Planting
Underplant with lavender, catmint, or salvia to deter aphids and attract pollinators. Avoid planting near eucalyptus or walnut trees, which can inhibit growth. Good companions include clematis, jasmine, and wisteria for mixed vertical displays.
Common Pests & Risks
Aphids cluster on new shoots in spring; spray with a strong jet of water or use neem oil. Black spot appears as dark leaf spots in humid weather; remove infected leaves and apply a copper fungicide. Thrips cause distorted buds; control with insecticidal soap. Scale insects on stems can be scraped off or treated with horticultural oil.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce watering and improve soil. Brown leaf edges: salt burn from fertiliser; flush soil with water. No flowers: too much shade or over-pruning; move to full sun and prune lightly. Powdery mildew: white coating on leaves in humid weather; increase airflow and apply sulfur spray. Cane dieback: fungal infection; cut back to healthy wood and sterilise pruners.