Cosmos are a regular annual in my garden - I don’t go a year without them! Their bright, clear blooms are a dependable and cheerful addition. I pop in seeds once risk of frost has passed, or pick up cell packs of starter plants to get a jump start on blooms (or you can start inside 4-6 wks ahead of last frost). Blooms can be single or double, and are traditionally pink, white or red, but there are now varieties with orange or yellow. I somehow did not plant any white cosmos this year, and am missing their pure pearly show.
Technical stuff – Cosmos, herbaceous annual, height of 18”-60”+ (dwarf and tall varieties), full sun, blooms summer into fall, wonderful cut flower and attracts bees and butterflies.