Fill a seed starter tray with seed starter potting mix and place a lavender seed on top of the soil in each tray cell. Then, cover the seeds with a light layer of soil. Mist the seeds with water and place the tray in a warm, sunny spot that stays around 70° F (21° C). After about 1 month, move the sprouted seeds to direct sun.

Sow lavender seeds from February to July on the surface of moist seed compost. Cover the seeds with a sprinkling of vermiculite or finely sieved compost. Place the seed tray in a propagator at 21-25°C (70-75°F) or seal it inside a clear polythene bag until germination, which can be up to 21 days.

Sow seeds directly onto the surface of the growing medium, gently press in, and barely cover - lavender seeds need light to germinate. Place in a warm, bright location with ample air circulation; keep growing medium moist but not overwatered. Lavender seeds will germinate in 4-8 weeks.

Growing lavender from seed is fairly easy, but it requires patience. You can sow lavender seeds directly in the garden, but they germinate much more reliably when started indoors inside a seed tray. Use a light, seed-specific potting mix, and gently cover each seed with a thin layer of soil.

There are 3 techniques you could use to grow lavender seeds: 1. starting them indoors, 2. direct planting, 3. winter sowing. So experiment to see which one works for you. Starting indoors (best method) – The best way grow lavender from seed is to start them indoors.