Protea nitida, commonly called wagon tree, is a slow-growing South African tree endemic to the Eastern Cape and Western Cape regions. Seeds require smoke or hot water pre-treatment combined with significant day-night temperature fluctuation (approximately 12°C difference) for successful germination, which typically occurs in 3-4 weeks.
Before sowing
Smoke treatment and hot water soaking are recommended pre-treatments. After hot water treatment, dry and dust lightly with fungicide such as Thiram.
Sowing
What to expect
Tips
Sow in autumn or spring when day-night temperature difference is about 12°C. Keep seeds moist but not waterlogged; use rainwater or tested water to avoid chlorine and alkalinity. Sterilize substrate before sowing to prevent fungal infections. Do not apply fertilizer or manure to seedlings; use organic plant food like fish or seaweed emulsion only if needed. Keep seed trays in semi-shade and protect from rodents and birds. Transplant seedlings into individual 1-litre pots once true leaves appear. Do not use bottom heat during germination.
Sources: Australian Seed Supplier, Silverhill Seeds, Protea Seeds, PlantZAfrica
