As a general rule, the smaller the seeds, the longer the plants take to grow, and the more difficult the seed is to handle. Always read the instruction on the seed packet prior to sowing. High quality seed usually comes complete with germination information. This information is critical to the success of many species, particularly perennials. With perennials, keep in mind the length of time before the plant will bloom.
Some perennials take three or more years to produce flowers.
Iceland and alpine poppies, flax, yarrow and hollyhocks are among the easier perennials to grow from seed indoors. Marigolds, alyssum and tomatoes are among the easiest annuals. African daisy, annual baby breath, candytuft, cosmos, flowering cabbage and kale, four o'clock, annual poppy. Lois Hole is the author of Northern Vegetable Gardening, and is currently working on a second book about annual flowers. Canadiana Group Inc. All rights reserved.