@fourleafclover
What Is a Four-Leaf Clover?
Four-leaf clovers are a rarity, which is why if you find one, it is said you're lucky. They are a variation on the common three-leaf white clover (Trifolium repens). Researchers from the University of Georgia believe a combination of genes and environment makes them sprout an extra leaf.1 Exactly how rare they are is debatable. According to experts, the probability of finding one is 1 in 5,000 or 1 in 10,000.
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