How to grow common correa
Overview
Common correa is a dense, evergreen shrub from the Rutaceae family, valued for its tubular flowers that appear from autumn through winter. It provides reliable structure and texture in native and mixed gardens, and its flowers attract small birds and beneficial insects.
Varieties
- Correa reflexa 'Marian's Marvel' — Compact form with large, pale pink flowers, very free-flowering in cool and temperate zones.
- Correa reflexa 'Dusky Bells' — Deep red flowers, low-growing habit, excellent as a groundcover under taller shrubs.
- Correa reflexa 'Clearview Giant' — Vigorous, upright grower with large green bells, ideal for screening or background planting.
Soil Preparation
Prefers well-drained, slightly acidic to neutral soil (pH 5.5–7.0). If soil is heavy clay, amend with coarse sand and decomposed organic matter. Avoid lime or alkaline amendments. A light application of native-specific fertiliser at planting is beneficial.
Growing Guide
Plant in a position with morning sun and afternoon shade, or dappled light under trees. Space 1–1.5 m apart. Dig a hole twice the width of the pot, backfill with native soil, and water in well. Apply a 5 cm layer of organic mulch around the root zone, keeping it clear of the stem. Avoid planting in heavy clay or constantly wet spots.
Sowing
Sow fresh seed in autumn in a seed-raising mix, barely covering. Germination is slow and erratic (4–8 weeks). Keep moist but not wet. Prick out into individual pots when 5 cm tall. Direct sowing is not recommended; transplanting is more reliable.
Care
Feed in early spring with a slow-release native fertiliser low in phosphorus. Prune lightly after flowering to maintain shape and encourage bushiness. Remove any dead or crossing branches. Do not over-fertilise.
Companion Planting
Grow with other bird-attracting shrubs such as Grevillea, Callistemon (bottlebrush), and Hakea. Underplant with native groundcovers like Viola hederacea or Dichondra repens. Avoid proximity to heavy feeders like citrus or roses that require different watering regimes.
Common Pests & Risks
Scale insects can appear on stems and leaves; treat with horticultural oil in early spring. Leaf-chewing caterpillars from native moths may cause minor damage; hand-pick or use a low-impact Bacillus thuringiensis spray if numbers are high. Powdery mildew can occur in humid, poorly ventilated positions.
Troubleshooting
Yellow leaves: often caused by overwatering or poor drainage; reduce watering and improve soil. Brown leaf edges: usually from salt buildup or hard tap water; use rainwater or flush soil. Sparse flowering: too much shade or excessive nitrogen; move to brighter spot and stop feeding. Dieback on young stems: scale infestation; treat with horticultural oil. Leggy growth: insufficient light or over-pruning; prune lightly and ensure adequate sun.