I was concerned because my fava beans seem to be taking a long time to sprout. I planted them on April 21. That’s 2 weeks ago (15 days). I dug up one seed and the good news is its doing great. A very long (4 inch?) root and a good sprout. I replanted it and checked and found that many more sprouts are about 1 cm below the surface. I should be more patient. These are in the coldest area of my garden. My guess is the soil is still only about 45 or 50F there.