The most common varieties are hybrids of Cosmos bipinnatus, a half-hardy annual with daisy-like flowers sometimes as large as four inches across, and beautiful shades of pink, red, or white. Moreover, plants have airy, threadlike foliage and usually grow about four feet tall, but sometimes they are taller (the sensation hybrids are shorter). They’re ideal for the back of the annual garden. It also uses them to fill in between clumps of tall perennials such as asters and phlox. Just be sure to protect them from wildlife, including deer or other critters, by installing deer fences around your garden(s).
Hybrids of C. Further, sulfurous flowers are shorter, normally around three feet, and have yellow, red, or orange flowers that are normally around two inches across and sometimes double. They are tender annuals. This is the preferred species for hot climates. If you have never tried cosmos flowers, you are missing a great event. However, plants have airy but bushy foliage and bloom very profusely.
Well, if you want to grow cosmos flowers, then you’ve got to sow seeds outdoors after the last expected frost, or indoors about six weeks before. Therefore, for optimum bloom, plant in full sun or part shade in soil that is not too rich or moist. Plant at least 12 inches apart. Tall varieties often need staking but can be pinched if you want shorter plants and want more bloom.
Depending on the variety and growing conditions, cosmos flowers can have different shade of blue. Shades of blue are characteristic of cosmos flowers. Depending on the variety, cosmos petals can be pale or dark blue. Various shades of blue are possible. Cosmos flowers can also be pink, white, or red in addition to blue.
Also Read: Pachysandra Terminalis ! Excellent Plant Around Tree Trunks