You can find the Yellow Cosmos in all regions of the United States.The height of the Yellow Cosmos is 2 to 3 feet tall.The Yellow Cosmos can live up to 21 days.The blooming period is from May to November.The color of the Yellow Cosmos is actually kind of orange.The scientific name for the Yellow Cosmos is Cosmos Sulphureus.The seeding rate is 15 lbs per acre.