Poinsettia is a short-day plant, which likes warmth. The long-term suitable temperature is 18-25℃, April-September 18-24℃, and September-April of the following year 13- 16℃, and the winter temperature is not lower than 10. Like humidity, poinsettia is sensitive to water, as long as the water supply is sufficient during the growing period; I like sunshine, and I need enough sunshine during the growth period of stems and leaves to promote the rapid growth of stems and leaves.

Second, how to raise safflower?

Poinsettia, Euphorbia deciduous erect shrub. Simple leaves alternate, elliptic to broadly lanceolate, 10 to 15 cm long, hairy on the back, and narrow leaves (also known as bracts) are inserted at the top of branches. Poinsettia is native to Central America and potted in northern China. Flowering period is 65438+February to February of the following year. First, the propagation method of poinsettia generally uses clay pots or sinks for cutting, and shoots and dormant branches can be used. Cutting should be carried out after flowering in early spring, using dormant branches, each cutting 10 cm. Air-dry for 2-3 days after cutting, or fully air-dry the milk to be cut with soot at the cutting mouth, and cut it into plain sandy soil with a depth of one third of the cutting length and a plant spacing of about 5 cm. After sowing, water it, place it in a ventilated and semi-cool place, keep the temperature at 15-20℃ and keep the basin soil dry.

Third, how to raise Pin Guan flowers and Pin Guan flowers.

1, plenty of light

Pin Guan flowers like light, which is indispensable. It needs enough light to grow better. Pin Guan flowers can be planted in a suitable place in the vigorous growth period, such as Nanyang Terrace. When the ambient temperature is too 28 degrees Celsius, the light intensity will increase. At this time, you should pay attention to sun protection.

2. Water management

Pin Guan flower is a bulbous plant, and the bulbous part has a strong water storage function, so watering should be controlled. The specific watering times should be determined according to the soil conditions. Keep the flower soil dry. When it is dry, water it thoroughly, but don't water it too much. Too much water in the soil can easily rot the roots. Be careful not to splash on the leaves when watering.

3. Rational fertilization

To make the flowers in Pin Guan grow healthily and bloom vigorously, we can apply fertilizer rationally and topdressing in time. Thin fertilizer can be applied once a month in normal growth period and once every 15-20 days in vigorous growth period. With the support of nutrition, there can be enough nutrition for growth.

4, pruning ventilation

Pin Guan has dense leaves and vigorous flowering, so we should pay attention to thinning flowers regularly to remove the residual flowers after flowering. By pruning, the light transmission and ventilation of plants can be enhanced, and the surrounding ventilation environment needs to be maintained.

5. Soil requirements

Loose and fertile soil is beneficial to growth, and humus soil, furnace ash residue, humus soil, river sand and basin soil can be changed every 1-2 years.

Fourth, what is a flower and how to raise it?

Euphorbia

Poinsettia is a short-day plant, which likes warmth. Its long-term optimum temperature is 18-25℃, 18-24℃ from April to September, and 13- 16℃ from September to April next year. The reaction is sensitive when the temperature is not lower than 1 min in winter, as long as water is needed in the growing period. I like sunshine, and I need enough sunshine during the growth period of stems and leaves to promote the rapid growth of stems and leaves. What if I want to plant it again? Should branches be planted on the same tree?

There are two ways of cutting propagation of poinsettia: semi-hard branch cutting, tender branch cutting and old root cutting. No matter which cutting propagation method is adopted, poinsettia cuttings should be cut in the early morning. Because the water content of the cuttings is enough at this time. When cutting, the incision should be smooth, and the cracked epidermis and xylem should be cut off to avoid water rot and affect healing and rooting. See Baidu Encyclopedia for details.