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Rocky, clay soil and high winds
Rock-filled gardens or windy areas are fine for lilies. Rocky soil assures good drainage, and constant wind helps dry foliage after irrigation or heavy rain. In really poor soil, add 1/4 to 1/3 total volume of compost, peat or well-aged manure for humus. Rock-filled area of "glacial till" in the Northwest, or level ground which is mostly clay, requires raised beds for success with lily bulbs and their need for proper drainage.
Don't worry about stems or flowers holding up to wind, some of the most beautiful lilies in the world are grown on the bluffs overlooking the Pacific Ocean on the West Coast. As the plant grows, the stem becomes stiffer, adapting to local conditions. Gale force winds generally do not damage either stem or buds, but may shred large, open blooms.
Wild Lily bulbs making up the genus Lilium belong to the family Liliaceae comprising of approximately 200 genera made up of approximately 2,000 lily species. There are in the neighborhood of 110 to 120 Lilium species depending on whose classification you reference. For the full article, click Knowledge Base