30 seeds To grow outdoor hibiscus from seed, sow the seeds indoors 6-12 weeks before the last frost, preferably after soaking them overnight to speed germination. Plant the seeds about 1-2.5 cm deep in a pot with seed mix, making sure they have warm and sunny conditions (at least 24-29°C) and a moist but well-drained soil. After 2-3 weeks, the seedlings should start to germinate. Step-by-step: Sowing: Sow the seeds indoors about 6-12 weeks before the expected last frost. Preparation: It is advisable to soak the seeds in water overnight to help them germinate faster. Planting: Plant the seeds about 1-2.5 cm deep in a pot or tray filled with a seed mix or potting soil. Conditions: Place the pot in a warm and sunny place with a temperature of at least 24-29°C for optimal germination. Gröning: Expect to see your hibiscus plants sprout after two to three weeks.
