How to grow nandina
Overview
Nandina domestica is an evergreen shrub in the Berberidaceae family, grown for its fine-textured foliage, seasonal colour changes, and clusters of red berries. It serves as a reliable filler or backdrop plant in mixed borders, tolerating dry shade once established.
Varieties
- Nandina domestica 'Nana' — A compact dwarf form reaching 60 cm, ideal for low hedges and small gardens in AU/NZ.
- Nandina domestica 'Gulf Stream' — A dense, upright variety with bright red new growth in autumn, popular in temperate climates.
- Nandina domestica 'Firepower' — A dwarf cultivar with fiery red-orange foliage in winter, excellent for containers and mass planting.
Soil Preparation
Nandina prefers slightly acidic to neutral soil (pH 6.0–7.0) that is well-drained and rich in organic matter. Amend heavy clay with gypsum and compost, or plant in raised beds to improve drainage. A 2–3 cm layer of compost worked into the top 15 cm of soil before planting provides sufficient nutrients for the first season.
Growing Guide
Plant Nandina in well-drained soil enriched with organic matter, spacing specimens 1–1.5 m apart for a dense hedge or 2 m apart for individual specimens. Position in morning sun with afternoon shade in all but the coolest zones; full sun is acceptable in cool climates. Dig a hole twice the width of the root ball, backfill with native soil, and water in well. Apply a 5 cm layer of mulch around the base, keeping it clear of the stem.
Care
Feed Nandina in early spring with a slow-release shrub fertiliser (e.g., Osmocote for Native Plants) at the rate recommended on the label. Prune lightly after berry drop in late autumn to remove dead or crossing stems and to maintain an open, airy shape. No heavy pruning is required; simply remove spent foliage and any wayward shoots.
Companion Planting
Pair Nandina with other shade-tolerant shrubs like Camellia japonica, Gardenia augusta, and Clivia miniata for a layered, textural border. Avoid planting near aggressive root systems such as those of Bamboo or large Eucalyptus species, which may outcompete Nandina for moisture.
Common Pests & Risks
Scale insects (e.g., soft brown scale) and mealybugs are the most common pests on Nandina in Australian gardens. Control with a horticultural oil spray (e.g., Eco-Oil) applied in early spring before new growth emerges, or introduce beneficial insects like ladybirds. Root rot from overwatering in heavy clay soils is the main disease risk; improve drainage or plant in raised beds.
Troubleshooting
Yellow leaves: caused by overwatering or poor drainage; reduce watering and improve soil structure. Brown leaf edges: result of harsh afternoon sun or wind scorch; relocate to a more sheltered spot or provide shade cloth. Stunted growth: indicates nutrient deficiency; apply a balanced slow-release fertiliser in spring. Leaf drop: often due to frost damage in cool zones; protect with frost cloth during severe cold snaps. Sparse foliage: from insufficient light; trim back overhead branches or move to a brighter position.