Most extensive online resource for seed germination information for specific plant species, including indexes for annuals/biennials, perennials, and shrubs/trees. Also general information on seed-starting techniques.
Forum for discussion of seed-starting topics by gardeners of all experience levels. Particularly active in winter and spring. FAQ includes many tips from home gardeners on variety of topics.
A forum for discussing all aspects of winter-sowing, the planting of seeds in containers outdoors in winter, for germination in spring. The FAQ contains a detailed explanation of the method.
Article by Patricia Holloway on harvesting, preparing and sowing rose seeds, including warm and cold stratification, reprinted by the Alaska Rose Society.
Bonsai enthusiast Brent Walston explains the fundamentals of germinating woody species, emphasizing the requirement to break down germination inhibitors.
Gibberellins are potent growth hormones sometimes used to induce germination in recalcitrant seeds. This article by John M. Riley discusses uses and provides some basic recipes.