The mountains are covered with the introduction of spring cuckoos and the production of potted plants.

The spring cuckoo is a beautiful flower. In the spring, when the spring cuckoo is in full bloom, the large spring cuckoo is very beautiful and spectacular. Below, let's take a look at the spring cuckoo.

I. introduction of spring cuckoo

Spring cuckoo, also known as Yingshanhong, Manshanhong, rhododendron, rhododendron, pomegranate, is a deciduous shrub, about 2 meters high; many branches, thin and straight branches. Leaves alternate, long elliptic-ovate, apex pointed, surface dark green, sparsely hirsute, abaxially light green. Racemes, flowers solitary or terminal, funnel-shaped, flowers of various colors, a wide variety. There are evergreen rhododendron and deciduous rhododendron; it is divided into spring cuckoo, summer cuckoo and spring and summer cuckoo according to florescence. According to the flower type, it can be divided into single valve, sleeve valve and double valve. The petals can be divided into flat, slightly wrinkled and wrinkled edges. The flowering period is from April to May, and the fruit ripening stage is October. Most of them are born in hillsides and hilly thickets.

Second, the bonsai production of spring cuckoo

Spring azaleas can be propagated by pressing, cutting, ramet, grafting and other methods. Can also be used to grow for many years, the root quaint and strange spring cuckoo old pile to make bonsai, mostly in late autumn and early winter or spring flowers before digging and transplanting, transplanting with more host soil, the trunk and main root to be properly trimmed, cut off the branches that affect the shape, leave more lateral roots and whisker roots, carefully examine the large branches, make sure that the shape is not necessary and then remove it. First planted in tile pots or underground blanks, the soil should be well drained sandy soil, the piles dug in late autumn and early winter are all buried with sandy soil, exposing only a few branches, and covered with plastic bags to keep warm and moisturizing; piles dug in spring should also be buried in the soil. Keep the soil moist without stagnant water after planting, and then gradually remove the sand from the trunk after the plant sprouts. In the process of raising billets, water should often be sprayed to the leaves and tree trunks to increase air humidity, but the roots should not be too wet, especially to avoid stagnant water, otherwise it will cause rotting roots and pay attention to shading in summer to prevent hot sun exposure.

Spring cuckoo flowers can be made into direct dry type, oblique dry type, curved dry type, double dry type, multi-dry type, exposed root type, cliff type, stone-attached type, water-dry type and other forms of bonsai. The seedlings propagated by cuttings, striping and other methods can be modeled year by year after growing for 3 to 4 years, and the modeling time is mostly before sprouting in spring or in the growing season of summer and autumn. Pruning is the main method and flat binding is supplemented by pruning. The modeling should follow the principle of first thickening and then fine, properly banding the trunk and main branches, and other branches are shaped by pruning. Because the branches of spring azaleas are relatively fragile, they are easy to break. Care should be taken when operating. If the branches break in the growing season, you can apply yellow mud to the wound and wrap it with plastic film, which will soon heal and recover. On the other hand, the old pile of spring azaleas needs to be trimmed and shaped, but some branches can also be properly tied. In order to improve the ornamental ability, the old stakes with thick branches and beautiful shape can be used as rootstocks, excellent varieties of spring rhododendrons as scions, and grafted by relying or cutting grafting. Can also according to the situation of the stump, gradually remove part of the soil, the root of the soil surface, so that its hanging roots show claws, simple and vigorous.

Spring azaleas like a warm and humid semi-shady environment, which requires good ventilation. Usually can be placed in bright light maintenance, summer and early autumn high temperature season to shade, avoid hot sun exposure, otherwise the strong light will burn leaves, but also can not be too shaded, lest plants grow too long, affect flowering, can be placed under the shade or tree shade maintenance. Keep the soil moist during the growing period, but do not accumulate water, pay attention to drainage in the rainy season, and sprinkle water to the plant and the surrounding ground when the air is dry to increase air humidity and prevent leaves from drying up. The surface of the basin soil can also be covered with a layer of soft grass to prevent the scorching sun from burning the fine fibrous roots on the surface of the basin soil. The mature thin liquid fertilizer is applied every 15 days or so. In order to prevent the occurrence of chlorosis, a small amount of black alum can be added to the fertilizer solution to make the leaves green and bright. The application of phosphate fertilizer such as bone powder and superphosphate for 1 or 2 times in the bud stage can promote the flowers to be big and colorful. Move into the sunny place indoors in winter, keep the soil above 0 ℃ from freezing, and control watering to make the basin soil slightly moist.

Pruning is carried out once a year after flowering, cutting off disease and insect branches, dry and withered branches, cross branches, overlapping branches, thin and weak branches, and overlong branches, so as to make the plant shape graceful, the branch distribution reasonable, and strengthen the ventilation and light transmission of the inner chamber, which is beneficial to the growth of the plant. The basin should be turned over every 2 years or so in spring or late autumn, and the basin soil should be slightly acidic sandy soil rich in humus and fertile and loose. Plant dyestuff function: as the foil of flowers, the branch and leaf function of spring cuckoo flower has not been paid attention to, in fact, it is a kind of natural dye.

In the domestic environment, potted cuckoo is the best. It is appropriate to start potting in early spring or late autumn. The root system of spring rhododendron expands slowly. It is suitable to use 3-inch pot in 1-2 years and 4-inch pots in 3-4 years, change the pot every 3-4 years, and trim the root system at the same time. Watering should be flexibly mastered according to the specific conditions. Less water should be poured when the temperature is low; when it is high, it should be poured as it dries, but there must be no stagnant water. To apply fertilizer, it is necessary to apply thin fertilizer frequently. For 2-4-year-old seedlings, in order to accelerate plant formation, new branches are often promoted by picking hearts and buds; after plant formation, diseased branches, weak branches and overlapping disordered branches are mainly thinned.

III. Disease control of spring cuckoo

Give priority to prevention. Before sprouting new shoots in winter and spring, spray flowerpots, potted soil and plants with topzine 600ml 800x liquid or equivalent Bordeaux liquid for 3 times; after new buds germinate, spray with 50% wettable carbendazim 600x liquid, once a week, three times in a row; in midsummer, red spiders are prone to occur, which can be sprayed with 2000 times 50% dichlorvos emulsion.

The above is the knowledge of the spring cuckoo. I hope I can help you.

The root system of spring rhododendron expands slowly. It is suitable to use 3-inch pot in 1-2 years and 4-inch pots in 3-4 years, change the pot every 3-4 years, and trim the root system at the same time. Watering should be flexibly mastered according to the specific conditions. Less water should be poured when the temperature is low; when it is high, it should be poured as it dries, but there must be no stagnant water. To apply fertilizer, it is necessary to apply thin fertilizer frequently. For 2-4-year-old seedlings, in order to accelerate plant formation, new branches are often promoted by picking hearts and buds; after plant formation, diseased branches, weak branches and overlapping disordered branches are mainly thinned.

III. Disease control of spring cuckoo

Give priority to prevention. Before sprouting new shoots in winter and spring, spray flowerpots, potted soil and plants with topzine 600ml 800x liquid or equivalent Bordeaux liquid for 3 times; after new buds germinate, spray with 50% wettable carbendazim 600x liquid, once a week, three times in a row; in midsummer, red spiders are prone to occur, which can be sprayed with 2000 times 50% dichlorvos emulsion.

The above is the knowledge of the spring cuckoo. I hope I can help you.