Ask a search engine and the answer is 1 in 10,000. But a clover research scientist says the odds of finding a 4-leaf clover have not been reliably quantified.

“Look for the break in the pattern. Clovers with three leaves have white V-marks on them, which form a triangle. A four-leaf clover’s marks look like a square or diamond pattern.” Don’t linge ...

peering around until you see a break in the pattern of triangular three-leaf clovers. A four-leaf clover will instead make a square shape, though do note that the fourth leaf is often smaller than ...