American prairie cosmidium flower and its cultivation from seeds

Filamentous telesperm or cosmidium - this flower is distinguished by its spectacular appearance and unpretentious disposition. It is suitable for large and small gardens, landscaping of local areas in settlements and for growing in containers. We will try to find out interesting facts about the cosmidium plant, about growing from seeds and popular varieties.


  • Cosmidium, description of the plant, popular varieties
  • Cosmidium seed growing
  • Cosmidium care

Cosmidium, description of the plant, popular varieties

The genus Cosmidium from the Asteraceae family was first discovered in the North American prairies of Texas on the border with Mexico. Like all plants from this area, cosmidium is perfectly adapted to rather unfavorable conditions of existence, an abundance of light and a lack of moisture. Life form - perennial or annual herbaceous plants.

The root is taproot, it goes deep enough that it provides the plant with the necessary amount of moisture during the period of drought. Stems are thin, branched. The height of the stems is from 0.3 to 0.6 meters. The bushes are neat, with a diameter of 0.3 to 0.4 meters. The leaf plates are thin, pinnately dissected.

The filiform lobes of the leaves give the bush lightness and weightlessness. For this lightness, the flower has earned another name - green spider webs.

The main charm of the plant lies in its inflorescences - baskets. As a rule, the marginal false-lingual flowers are colored yellow-brown, and the median tubular flowers are darker. From the inflorescences there is an impression of light soaring bright butterflies. The diameter of the baskets is from 3 to 8 cm.The number of reed flowers is usually 8.

The following varieties and cultivars of cosmidium are most often used by flower growers for growing on their own plots:

  1. Chocolate eyes - the height of the stems is up to 45 cm, the color of the inflorescences is contrasting, the dark brown center and bright yellow edges of the reed flowers, differs in the duration of flowering, which begins at the end of June and ends in September, the variety can be used for cutting;
  2. Brunet - the middle of the inflorescence in this variety is brown-red, the edging of the reed flowers is bright yellow, the diameter of the inflorescence is 7 cm, the height of the stems is 0.5 m;
  3. Philippines - compact bushes, dark purple centers, orange edging with a smooth transition to yellow;
  4. The Magic Flute - low, up to 0.3 m compact bushes with good branching, flowers with a dark brown center and yellow edging, inflorescence diameter 3 cm, suitable for growing in containers and landscaping loggias, balconies, blooms from late June to October.

All varieties of cosmidium are grown in annual crops through sowing seeds either for seedlings or directly in open ground.

Cosmidium seed growing

Growing cosmidium from seeds is not difficult. If the florist wants to get earlier flowering, then sowing seeds for seedlings is needed.

Growing cosmidium through seedlings

In order to get seedlings suitable for planting in the ground by the end of May - beginning of June, then in early April it is necessary to sow seeds for seedlings. To grow cosmidium for seedlings, you will need to buy ready-made universal soil and add a fourth of the washed sand to it.

If garden or sod land has been harvested in the fall, then add one part of peat and 1/2 part of sand to two parts of the land. The resulting mixture is well calcined for 30 minutes in an oven heated to 190 degrees. Fill seedling boxes with the mixture obtained and moisten the soil well the day before sowing seeds for seedlings.

Spread the seeds of cosmidium over the surface of the soil, without embedding them deeply. Close the containers with glass or film and put them in the light in a room where the temperature is not lower than + 18 degrees. Important! It is necessary to monitor the top layer of the soil. When it dries, it is required to spray the crops with warm water.

Thin shoots appear at about 9-12 days. As the plants grow, they gain strength and at 5-6 weeks the seedlings can be dived into separate pots. In open ground, cosmidium is planted in early June.

Sowing seeds of cosmidium in open ground

For sowing seeds in open ground, an area with good lighting and light soil is suitable. You need to remove all the garbage from it, dig it up, remove weeds. For better plant development, it is possible for each square. meter, add 5-6 kg of humus, 30-40 g of complex mineral fertilizer.

Sand can be added to heavy soils. The selected area is moistened before planting and the seeds are sown. This should be done in the second decade of May. Two weeks after germination, they must be either thinned out or cut open. When the seedlings reach 5-6 cm in size, they can be transplanted to a permanent place. Further care of the plant is not difficult.

Cosmidium care

Despite its unpretentiousness, the plant will grow well and bloom profusely in fertile, well-fertilized soils. After planting flowers in a permanent place, the seedlings need to be watered. For feeding, 10 days after placing the flowers in a permanent place, you can dilute any organic fertilizer and water them.

The next top dressing is also done after 10 days and it is better to do it with mineral complex fertilizers. Thus, you need to do until the end of the season, alternating organic and mineral fertilizing. The plant is quite resistant to a lack of moisture, but in the absence of natural precipitation for a long time, it needs additional watering.

Important! The first flowers on several plants after flowering must be left for ripening and collection of seeds. All other flowers must be removed after flowering. This stimulates the formation of new inflorescences. In all other respects, caring for a plant does not differ from caring for other flowers from the Astrov family.

In the garden, cosmidium can be placed in homogeneous groups, it also goes well with calendula, coreopsis, marigolds. Alpine slides can be decorated with these flowers. To create a corner of natural prairies, decorative cereals can be planted next to the cosmidium.

Cosmidium flower on video: