VACAVILLE, Calif.—A field of lavender sways as a fresh breeze passes. Busy bees hover between sticks of purple and white that protrude from a green bush, like pins on a pincushion. At Soul Food Farm in Vacaville, many varieties of lavender are blooming as the farm’s U-pick lavender festival begins. The owner, Alexis Koefoed, told NTD Television that she and a friend of 20 years grow lavender together and named their business Hierbas y Flores, which is “herbs and flowers” in Spanish. “We make a lot of lavender products here at Hierbas y Flores, and it’s very common for lavender farms to sort of branch out and make added value products,” Koefoed said. “So here we make a lavender lip balm, a lavender sugar scrub, soap; we also make sashes so people can put lavender in their clothes drawers, and their clothes smell nice.” The flowers come in shades of …