As I wander the garden now, in the last throes of a very hot Summer month, the cosmos plants are blooming happily. They have such simple, cheerful flowers! Their colourful blooms sit atop long stems that bend and sway in the breeze above a mass of bright-green ferny foliage. When those blooms are spent, and the seeds form, they disperse on those breezes and self sow around the garden. So that, the next time the warmer months roll around, you'll have even more cosmos to brighten up your garden.
Our little native bees seem to love cosmos as much as I do. Dozens of them spend time every morning among the flowers happily plundering their pollen. I am happy just to watch their busy efforts and to delight in the bright bursts of colour that are the cosmos flowers in my Summer garden.