Pittosporum crassifolium (Karo)

How to grow Pittosporum crassifolium in NZ

To grow Pittosporum crassifolium (Karo) successfully in New Zealand, plant it in full sun to partial shade in well-drained soil. It’s highly tolerant of coastal conditions, wind, drought, and poor soils, making it ideal for tough sites. Water regularly while establishing, then only during extended dry periods. Apply a general-purpose fertiliser in spring to support healthy growth. Prune lightly after flowering to shape or maintain density, mainly when grown as a hedge or shelterbelt.

Pittosporum crassifolium hedge spacing

When used for hedging, Pittosporum crassifolium should be planted 40–50 cm apart. This spacing helps the plants form a dense, even barrier. Closer spacing promotes faster fill-in and encourages more upright growth. Wider spacing may result in a looser, more open hedge, which can be desirable in some informal designs.

Planting and Care Tips

Choose a sunny to partially shaded spot with well-drained soil. Dig a hole twice as wide as the root ball and enrich the soil with compost if needed. Water the plant regularly during the first year to help it establish, then reduce watering as it becomes drought-tolerant. Mulch around the base to retain moisture and suppress weeds. Feed in spring with a general-purpose fertiliser, and prune as needed to shape or maintain density.

Landscape Uses for Pittosporum crassifolium

Pittosporum crassifolium is ideal for hedging, shelterbelts, and coastal planting due to its tolerance of wind, salt spray, and drought. It also works well as a privacy screen, background plant, or structural feature in native and low-maintenance gardens. Its dense foliage and upright growth make it suitable for formal and informal landscape designs. Karo is also excellent for erosion control on exposed sites and blends well with other native New Zealand plants.

Why buy Karo trees from The Plant Company?

Buy Karo trees (Pittosporum crassifolium) from The Plant Company for top-quality, NZ-grown plants that are hardy, healthy, and ready to thrive. Our trees are carefully cultivated for strong roots and vigorous growth, making them ideal for hedging, shelterbelts, or coastal landscapes. We offer fast, nationwide delivery and expert care advice to ensure your planting is successful. Trust The Plant Company for reliable service and premium Karo trees suited to New Zealand’s diverse growing conditions.