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What is a Tetraploid?
Tetraploid cultivars have extra chromosomes in their genetic makeup which tends to give thicker foliage, sturdier blooms, and longer-lasting, more heat-resistant plants. The color range available is still somewhat limited, but breeders make progress each year.
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