A helicopter sprays flowers grown for seed: Lompoc, California. USA. The Lompoc Valley is said to have the most consistent temperate climate in the world, which is a critical factor in the cultivation of flowers. The valley has been a flower seed-producing region for nearly 100 years. In the early 1980's, Lompoc Valley was producing one-third of the world's flower seeds. Lompoc is a 12-mile-long, and 3-mile-wide valley, which lies just inland from the coast of California, about 150 miles north of Los Angeles. There are 1600 acres of 600 varieties of flowers from which they harvest approximately 400 tons of seeds each year. Crop dusting of flower fields (spraying pesticides).