Despite the name, dill weed isn’t a weed at all. Instead, it comes from the feathery leaves of a sturdy, delicate-looking annual. Spice Islands dill weed is harvested at the height of its flavor, just as the flower buds are starting to form. The tiny yellow flower buds are picked right along with the crisp, green leaves, adding a pleasant, slightly lemony aroma that’s missing from dills harvested before flowering. Dill weed should be added toward the end of cooking or in recipes with low or no heat to retain its mild, sweet flavor.