Persian chrysanthemum

Persian chrysanthemum is an annual herbaceous plant, alias: Autumn English, Great Persian chrysanthemum, pair of leaves of plum, broom plum; family: Asteraceae Autumn English genus.

Origin

Iran, Mexico

Morphological Characteristics

The plant is about 40-80 centimeters tall. Fine stems erect, more branched, simple leaves opposite; bipinnatisect, lobes narrowly linear. The head is solitary, 5-8 centimeters in diameter; the outer whorl of ligulate flowers has about 8 petals; there are pink, crimson, white, purple and other colors; the central tube is yellow.

Then how to plant cosmos seeds?

Then let's first learn some of its simple characteristics, the flowering period of cosmos is July-October. Like light, like cool, ventilated environment, resistant to drought, barren. The soil requirements are not strict, but can not be waterlogged. The soil is fertile, easy to cause branches and leaves to grow in vain, affecting the quality of flowering. Cosmos is mostly propagated by sowing seeds. The germination temperature of seeds is 20-25 degrees; the germination days are 7-10 days, and the suitable temperature for growth is 15-35 degrees; the time from sowing to flowering is about 60 days. In addition, cosmos has a strong self-propagation ability, with the ability of self-seeding and easy to survive. There are wild cosmos on the roadside in many areas.

Additionally, it is important to note that when planting cosmos, the seeds can be spread evenly on the ground by sowing and then raking with a nail rake, not too deep, which will affect the quality of germination. With regard to fertilization, you can spread 2000 kg of rotted farmyard manure or 50 kg of ternary compound fertilizer per acre before preparing the ground, and level the ground and burgundy fine. In the late emergence of seedlings, do not need to fertilize again, and in the cosmos to grow to 30 centimeters or so when you have to remove the heart, to prevent because of excess nutrients, caused by the futile growth, resulting in cosmos flowers bloomed too small to affect the overall aesthetic degree, the purpose of removing the heart is to make the cosmos pole height fixed value in 30 centimeters or so, so that the flowers are big.