Upon receiving your seeds, safeguard their potential by storing them in the fridge away from direct light until you're ready to sow them. The optimal time for sowing is generally in autumn, avoiding the extremes of winter chill and summer heat, particularly crucial for Protea cynaroides seeds, which rely on the fluctuating temperatures of autumn for optimal germination.
When it comes to propagation media, ensure a well-draining yet moisture-retentive environment. Coir peat and perlite blend seamlessly to create an ideal mix, free from the need for compost or fertilizers. Remember to wear a dust mask when handling these materials due to fine particle production.
Pre-treatments are pivotal for maximizing germination rates, especially for Proteas, Banksias, and Waratahs. Heat treatment aids germination and curtails fungal spread, while large-seeded varieties like Leucospermums and Leucadendrons benefit from hydrogen peroxide treatment to break down seed coats.
Once pre-treatments are complete, sow your seeds immediately. Ensure a moist seed raising mix in a propagation tray, evenly spread the seeds, cover lightly, and water well. Maintain a warm, sheltered environment, watering as needed to keep the mix moist. Be patient, it can take around 2 -3 months to germinate.
Upon reaching roughly 5cm in height, seedlings are ready for pricking out, generally by spring if sown in autumn. Handle with care, potting into individual pots with suitable native potting mix and low-phosphorus fertilizer.
Growing on from seedlings is a patient process, rewarding with time and care. Prune annually to control height and promote healthy growth. Share your growing journey with pride—tag us on Instagram @proteakingaus