Cosmos is a genus of annual and perennial flowering plants in the family Asteraceae. The flower originates from Mexico. It was transported by the first missionaries who came back from America and immediately won the gardeners with its beauty, airy greenness and colors – snow-white, pink, cerise.
It has a small bright yellow stamen. The annual Cosmos bipinnatus, also known as Garden Cosmos is usually grown with different colors for flower beds and cut flowers.
The flower’s seeds can be sown in the end of April or the beginning of May. Seedlings can be made, too, especially for the small species. In order to get a beautiful bouquet in the garden the seeds must be 3-4 in a bed at a distance 30-40 cm. The Cosmos blossoms from June to the first frost in October. It looks good behind a border of small flowers – Tagete, Marigold, Zinnia, Nasturtium, Verbena. It loves the sunny corners but not the hottest places in the garden. It prefers the shadow at noon and is not pretentious to the soil. It does not need nutritious soil because it then grows big but blossoms little. The use of acid soils is not recommended.
Practically, the unpretentious Cosmos flower does not need any care other than watering. 
Before it blossoms, the plant can be dust with wood ash or phosphorus-calcium substrate. This will add some nutrients and be beneficial to flower. Do not dust with wood ash if any type of fuel or wood preservative was used on the wood. The faded flowers should be removed in order to prolong the blossoming but do not forget to collect the seeds from the most beautiful and strong plants.
Seeds from new and impressive species could be found in the flower shops these days – ones with thick blossoms, snow-white colors, lots of branches, forming a bush with height almost to a meter, and also short species.