Purple Hibiscus

Seed

Hard-coated seeds from a fast-growing, drought-tolerant native shrub. For best results, pre-treat seeds by lightly scratching with sandpaper or soaking in hot water overnight to break dormancy.

Sowing depth

2–3mm.

Mix

Free-draining sandy loam or native mix.

Timing

Spring or autumn.

Germination

Warm, full sun.

Moisture

Keep consistently moist but ensure excellent drainage.

Timeline

14–30 days.

Planting Instructions

1. Break dormancy first: scratch the hard glossy coat lightly with sandpaper, or soak the seed in hot water overnight.
2. Sow in spring or early autumn into a free-draining sandy loam or native mix.
3. Cover with 2–3mm of mix and place in a warm position in full sun.
4. Keep consistently moist but never waterlogged; seedlings appear in 14–30 days.
5. Pot on seedlings once they have 4–6 true leaves.
6. Plant out in a sunny position with sharp drainage and good air circulation.

Care Tips

• Plant in full sun with good drainage — plenty of light brings more flowers.
• Water regularly while establishing; once settled it handles dry periods well.
• Prune after flowering — light trimming keeps it compact and brings on fresh growth.
• Fast-growing and long-flowering: 2-3m tall, and in mild climates it barely stops.
• Feed with a low-phosphorus native fertiliser in spring if you feed at all.
• Dislikes humid summers — give it an open position with air movement.