Cosmos sulphureus is native to Mexico, Central America, and northern South America. With golden yellow blooms, it is very drought tolerant and loves hot weather. The plant grows 2 to 6 feet tall and comes in double and semi-double flowers.

Where do cosmos grow best?

Cosmos are tolerant of most soil pH levels, but grow best in neutral to alkaline soils. Cosmos can tolerate warm, dry weather very well. They are even drought-tolerant. Depending on the variety, cosmos can grow anywhere between 18 to 60 inches tall, so plan accordingly.

Where are cosmos found?

Distribution. Cosmos species are native to scrub and meadowland in Mexico where most of the species occur. In the United States, some varieties may be found as far north as the Olympic Peninsula in Washington, but the range also extends through Central America to South America as far south as Paraguay.