Peony gardens can be established in important parts of parks and scenic spots, and flower stands can be built in classical gardens or courtyards for planting; Planting with buildings can form peony pavilions, peony pavilions and other garden landscapes; It can also be used to arrange flower borders and flower belts. Potted ornamental plants are flexible and convenient, and can be opened all year round by adjusting flowering period. Peony is also a good cut flower material. Peony is a deciduous shrub, with many thick branches and a height of 2 meters. Bipinnate compound leaves, broadly ovate to ovoid-oblong, 3-5-lobed at the apex, entire at the base, and white powder on the back of leaves.
The flower has a single branch and a large flower; There are many patterns; The colors are purple, yellow, white, crimson, pink and bean green. The flowering period is from late April to May. There are many kinds of peonies. According to incomplete statistics, there are about 800 varieties of peony in China. The plant shape of different varieties is quite different. Upright peony species, with small spreading angle, straight upward extension, usually long internodes and strong growth potential. A variety of Paeonia suffruticosa is open, with branches spreading at a large angle and extending around. The plant width is wider than the plant height and the growth potential is weak. Semi-open peony varieties, between the two. Peony likes light, but it is not suitable for direct sunlight; Need fertile, moist and well-drained soil; I like warmth to avoid heat, and I like cool climate to avoid cold. Generally, the annual average temperature 10 ~ 20℃ is appropriate, with the lowest temperature not lower than -22℃ and the highest temperature not higher than 4 1℃. It is best to choose a place with big trees to plant. Peony likes fertilizer, so it should be combined with decomposed base fertilizer when planting, and more organic fertilizer should be applied before winter after flowering. Peony is a hinged branch, with many branches and short thickness. Strong tillering ability. Summer and autumn differentiation, with a single branch at the top. It grows once a year, and the growth is very small.
In the middle and lower reaches of the Yellow River, it germinates in March, shoots in March-April, blooms in late April, branches stop growing in May-June, and flower buds differentiate in June-August, which is a mixed bud.10-1defoliation. The shaping method of peony is very simple, and it usually grows naturally. With a little manual intervention, it is cut into a multi-branched natural round head. No matter whether it is grafted seedlings or propagated separately, 5 ~ 6 clustered main branches are selected for each plant within 2 ~ 3 years after planting, and the plastic belt can naturally branch. At the same time, cut off the inward redundant branches, cross branches and parallel branches. If there are not enough branches, they can be cultivated with basic sprouting branches. In the future, according to the cluster length, we should choose to leave appropriate side branches on the main branches year by year, and don't choose to leave too many side branches to avoid overlapping and crossing.
There is no need to pay attention to roundness on the tree, so it is natural to pose. Peony differentiates in summer and autumn, and the flower buds are mixed buds, which are differentiated from axillary buds of branches in that year, and the mixed buds bloom at the top of new shoots in the next year, so pruning is mostly carried out in dormant period, spring and after flowering. There are many times of maintenance and pruning of peony, but the amount of pruning each time is very small, which can be summarized as four times a year. After the first pruning, cut off the residual flowers in time to avoid wasting nutrition (except harvesting seeds), and all the leaves under the flowers can be preserved to enrich the branches. The second pruning is in May-June, and the upper leaf bud of the new shoot is peeled off, or the upper leaf bud is destroyed with a pin. Bud picking should be carried out according to the strength and branching of the plant. Each branch can leave 1 ~ 2 full buds, and others can be removed. If there are enough flowering branches, only one bud can be left on each branch, and each bud will have one flower. If you need to leave branches in irregular clusters, leave two buds at most in one branch, or leave too many branches, which will not only destroy the plant shape, but also disperse nutrition and make the flowers smaller. Weak branches can't make it bloom, all buds can be picked, so when the plant is strong, it can produce huge and beautiful flowers. The third pruning is the main pruning, which is carried out at the end of winter. First, sparse dead branches, weak branches, pest branches and disabled branches; Then leave 1 ~ 2 branches for each branch, and cut each branch short above the full bud in the middle, and the appropriate cutting length is 2 ~ 4 buds.
At the same time, check whether the flowers are too dense. If it is too dense, it is necessary to cut off the low flower branches to make them thick and moderate, so as to prevent "hiding flowers in leaves". In March-April of the following year, when the new buds begin to grow, they are pruned for the last time, and the rhizosphere soil is removed, and the roots and tillers are removed, which is also called soil-removing buds. Peony has many roots and tillers, which are purplish red and have strong growth potential. It will compete with the main branches for nutrition, promote plant aging and affect the ornamental effect. If it is not removed at this time, it will only consume nutrients in vain. Commonly known as "peony first, peony pedicure". With the sprouting of tillers, the tillering work should be carried out continuously for 2 ~ 3 times. Peony has a long life span, which can reach more than 100 years if it is carefully maintained and managed.
As the saying goes, "Old plum blossoms lack peony", and the branches of 5 ~ 15 years old bloom best. Therefore, we must pay attention to renewal and pruning in order to produce good young flowers. Usually, every 2-3 years, the old and weak branches are thinned from the base, and the sprouting branches with appropriate directions are selected as regenerated branches. In addition, we should also pay attention to some varieties with large flower diameters. In bloom, flowers often droop and fall, and they need to be supported by pillars.