As California passed into American control, more Americans bought land and settled near the Zanja, which continued to provide year-round water for agriculture. Farmers Anson Van Leuven and Horace Monroe Frink planted the first orange trees in 1860, setting the economic course of the valley for the next hundred years. The Zanja provided the ample water needed to grow citrus on this very fertile agricultural land. Early oranges, called seedlings, were smaller and sourer than today's Washington Navel oranges and contained many seeds. Grapefruit, lemons, and other citrus were grown, but oranges were the dominant crop. The Mission District became the hub of the valley's citrus industry, with dozens of growers, packing houses, and a train station supporting the orange industry and community. Oranges from the area eventually became known for their sweetness and commanded high prices around the world.