Matters needing attention in peony cultivation

Peony (scientific name: peony andr. var。 papaveracea (andr。 ) kerner) is a deciduous shrub of Paeonia in Ranunculaceae, with a stem of 2m high and short and thick branches. The leaves are bipinnately compound, and the leaflets are not divided.

Flower solitary branch apex, diameter10-17cm; Pedicel 4-6 cm long; There are dark purple patches at the base of the inner surface of the petals, which are inverted oval and have irregular ripples at the top; The disk is leathery, cup-shaped, purplish red, with several sharp teeth or lobes at the top, completely covering the carpel, and the carpel cracks when it matures. The pods are rectangular with dense yellow-brown bristles.

Distributed in northern Sichuan, southern Gansu and southwestern Shaanxi (Taibai Mountain). It is cultivated in Gansu and Qinghai. It grows in the undergrowth plants on the hillside at an altitude of 1 100-2800 meters. Root bark is used as medicine, called "peony bark"; It's an antispasmodic drug, which can cool blood and disperse blood stasis, and treat apoplexy and abdominal pain.

Growth habit: Paeonia rockii grows in the forest at an altitude of 1 100-2800 meters. Cold tolerance, drought tolerance and strong adaptability. The main producing area is in temperate zone, spanning semi-arid and semi-humid areas. The annual average temperature in this area is 5- 12℃, the extreme minimum temperature is -29.6℃ (Lintao), the accumulated temperature is ≥ 10℃, and the annual precipitation is 300-600 mm.

According to the introduction situation in different places, some varieties of Paeonia rockii can overwinter normally in shangzhi city, Heilongjiang Province, where the annual average temperature is 2.3℃ and the absolute minimum temperature is -44. 1℃. Purple-spotted peony likes light and is also resistant to semi-shade. It is suitable for all kinds of soils developed on loess parent material, and slightly resistant to alkali (pH 8.0-8.5). Its ecological type belongs to plateau cold and dry ecotype.

Beauty of Paeonia lactiflora: According to the long-term observation and research on the changes of color, pattern and variety formation in the process of new variety breeding, the three-level classification of "color", "pattern" and "variety name" conforms to the actual process of peony variety evolution.

Color is the most prominent and easily distinguished feature of peony, and the color is relatively stable, so color is regarded as the first-class product of purple peony variety classification. There are eight colors: white, pink, red, purple, black, blue, yellow and multicolor. Among them, black refers to deep purple and deep purple, yellow refers to light yellow or light yellow, blue refers to powder blue or powder purple blue, and multicolor refers to having two or more colors.

Flower pattern is the main feature that correctly reflects the variety characteristics and ornamental value, and it is the comprehensive embodiment of the overall morphological characteristics of flowers when they bloom in the plate. From single petal, semi-double petal to double petal, it reflects the increasing number of petals and the subsequent changes in appearance and morphology.

The flower patterns of Paeonia rockii can be divided into single petal, lotus flower, chrysanthemum flower, rose flower, laurel flower, crown flower and hydrangea flower. Variety name is the lowest level and basic unit of variety classification, which represents a specific plant with production and application value and theoretical research value. Is the general name of all information, and its content is subject to the description of the variety name when it was first legally published.

Cultivation method of Paeonia rockii

Moisture: Paeonia rockii grows in the harsh environment in the northeast of China and has strong drought tolerance. So generally speaking, we don't need much watering. We just need to water it once every two days in winter and summer, or once a day in winter, depending on the temperature. Because peony is extremely afraid of waterlogging, if it is watered too much, it may lead to water accumulation in the soil.

Lighting: Paeonia rockii not only likes plenty of sunshine, but also is a long-day plant. Generally, it takes more than 5 hours of light to meet the normal growth needs of Paeonia rockii, but Paeonia rockii is also afraid of excessive light.

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Especially in summer, strong light may cause the leaves and flowers of peony to wither, which seriously affects its ornamental value. It is necessary to pay attention to shading during the flowering period of peony, otherwise it is likely to shorten its flowering period.

Soil: When cultivating Paeonia lactiflora, it should be noted that the roots of Paeonia lactiflora are fragile when planted in potted soil. Some old-fashioned rotten roots should be cleaned up in time. After planting, a thick layer of soil can be properly covered and watered, which is beneficial to the rooting of Paeonia lactiflora. The soil of peony is generally mixed with sand, humus, river soil and river sand. Low requirements for soil, good salt and alkali resistance and good adaptability to soil. Of course, it grows better in fertile soil and mature flowers are more ornamental. Good results have been achieved, and Trim bacterial fertilizer can be used for improvement.

Temperature: Paeonia rockii has weak heat resistance, and its suitable growth temperature is generally between12 and 23 degrees Celsius. When the temperature exceeds 25 degrees Celsius, the growth of Paeonia rockii will be inhibited and the flowers and leaves will wither. In fact, the cold resistance of Paeonia rockii is not strong. When the temperature is lower than 6 degrees Celsius, the growth of Paeonia rockii will be slower, while when the temperature is lower than 0 degrees Celsius, Paeonia rockii will hibernate.

Precautions for breeding: Peony planted in the south of the Yellow River and low-lying areas needs drainage, especially in rainy season, to avoid waterlogging. The soil in the northeast is loose, so the surface water permeates quickly. Therefore, the newly planted Paeonia rockii must ensure sufficient water supply. Generally, after two years, when the new roots of Paeonia suffruticosa are deeply rooted, there is no need to water them too much.