Tiger Lily (Lily Pardalium) Flower Mix-color Flower - Flower Garden Plant - 100 Seeds
Different lily species germinate in varying ways, and vary in the way that changing temperatures trigger them into growth. This has led some lily growers to develop quite elaborate techniques to speed germination and seed growth, such as putting the seeds into plastic bags of moistened vermiculite, keeping them warm for a few weeks, then refrigerating them for a few weeks more, then bringing them back into warmth.

In practice, you can get good results simply by sowing the seeds as soon as you get them, and – at least in temperate climates such as most of the UK – letting the natural change of seasons do all the work of triggering germination. However, the North American species and hybrids appear to do best when sown in early autumn to give them a period of cool night temperatures essential to their germination. Their first leaves will then appear in late winter or early spring.