Alias: Little Persian Chrysanthemum, Money Chrysanthemum and Peacock Chrysanthemum
Flower language: aggressive and self-motivated.
Color: yellow, orange
Morphological characteristics: perennial herb, 30-60 cm high. Stems erect, leaves opposite, sparsely alternate, entire, lobed or acute. Flowers are solitary or sparse panicles, with two rows of involucres, 3 in each row, and the base is United. Tongue-shaped flowers are 1 row, and the tongue shape is wide, with yellow, brown or pink. Tubular flowers are yellow to brown. Cold-resistant and drought-resistant, easy to cultivate!
It is also often used for greening cultivation. It is characterized by strong reproduction and sometimes becomes semi-species. In addition to the representative yellow, there are varieties such as double petals. Long habit: the seed life of Coreopsis is 2 years, the suitable growth temperature is 10-30C, the optimum growth temperature is 20'C, the ground average air is115 degrees, the germination temperature is 20-25"C, and it takes about 7 15 days after sowing. Need well-drained soil. Flowering: July -65438+ 10. 1 g contains about 390 seeds.
Training points:
1. Planting method Spring sowing like Coreopsis is from March to April. Autumn September-165438+1October. Sow 3-5g per square meter, with sowing mode, sowing depth of 0.5- 1cm, row spacing and plant spacing of 20cm. The terrain for planting Coreopsis should not be low-lying and stagnant, and the soil should be loose. Before sowing, rake the land, drench the soil with water, then spread the seeds evenly on the soil surface after the water seeps out, and cover it with vermiculite or 0.5- 1cm. Before emergence, the seedbed should be kept moist and not dry. In the sowing season, spring sowing is dominant in the north, and sowing can be carried out in the south all year round. Autumn sowing in the north needs to be covered with film or soil to prevent the seeds from overwintering.
2. The main diseases of disease control are Fusarium wilt and brown spot. Prevention and control methods: firstly, remove diseased leaves, pull out seriously diseased plants and take them out of the field for destruction; Secondly, chemical agents are used for prevention and treatment, and kocide is sprayed every 5-7d, 1 time. Spray three times in a row. Use 75% phoxim EC 1000 times, and remove the sprayer nozzle. Spraying chemicals at the base of the stem at night to control the ground tiger. It is effective to control other pests with mirex, dichlorvos and dicofol.
Usage: Coreopsis has dense branches and leaves, especially when the tender leaves germinate and turn bright green in winter. Between spring and summer, flowers are big and bright, and they often bloom endlessly. It can reproduce itself and is an excellent sparse forest cover. You can see leaves and flowers. Coreopsis is very effective as a covering material for roof greening and can also be used as a flower border material.