This was taken at my son and daughter-in-law's house in their back garden. They have many different gardens on their property, each with its own theme. Visiting them and walking around the yard is like walking around botanical gardens. This one was one of my favorites.
There are 42 species of Dahlias, along with many hybrids. This particular species is called, Dahlia (Dahlia rosea) because of its red color. Some are round, some flat, they come in different sizes, shapes and colors. They are native to Mexico and have been used as a source of food. Their hollow stems were used to make water pipes, and they've been used as medicine, specifically to treat Epilepsy.
I especially like this particular variety because of its pom-pom shape.