What fragrant flowers and trees have been planted in the North Yard?

The dry weather in the north limits the growth of flowers and plants. So what fragrant flowers and trees are planted in the North Yard? Let me show you the plants in the north. But the following contents are for reference only!

Some fragrant flowers and trees are planted in the north yard. Several common flowers suitable for planting in northern courtyards are: winter jasmine, Chinese rose, cypress, wisteria, peony and crape myrtle.

Because the enclosure and greening in the courtyard form a small ecological climate, the temperature and humidity will be better than the big environment, so we can boldly try to plant some southern plants, such as osmanthus fragrans and radix aucklandiae.

Geographical distribution:

The northern region is located in the north of Qinling-Huaihe line, south of Inner Mongolia Plateau and east of Daxinganling and Wushaoling.

Northern climate:

The climate in northern China is mainly temperate monsoon. The climate is characterized by four distinct seasons, warm and rainy summer and cold and dry winter.

The annual precipitation in the northern region is mostly 400-800 mm, and it is concentrated in July and August, with heavy rain. At this time, the river is skyrocketing and the river is easy to flood. But every spring, there is little rain and frequent drought (severe spring drought and heavy rain in summer).

The morphological characteristics of Sabina vulgaris are artificial cultivated varieties of Sabina vulgaris. The crown is cylindrical or columnar tower; Branches extend straight upward, usually twisted upward, with dense branchlets and several dense clusters of equal length at the ends of branches; Scales are closely arranged, yellow-green when young, then emerald green; These cones are blue and slightly covered with white powder.

It is 8 meters high, with a straight trunk, a narrow cylindrical shape and twisted branchlets, hence the name. Branchlets are dense, leaves are dense, all scales, young leaves are yellow-green, and old leaves are emerald green. The cones are blue-green, and the fruit surface is slightly white. Some cypress trees not only naturally grow into cones, but also roll up animal images such as dragons, horses, lions and elephants. Some of them are pruned into spheres, drums and hemispheres and planted in single rows or groups in the garden. Some species are planted in hedgerows and trimmed into straight ridges after shaping, which can show their low, plump, meticulous and fine. The side branches of cypress are winding, with unique natural style and high ornamental value. They are widely cultivated all over China.

Trees (original species), 20 meters high and 3.5 meters in diameter at breast height; Bark is dark gray, longitudinally split and split into strips; The branches of young trees usually extend obliquely upward to form a pointed crown, while the branches of old trees spread flat to form a broad circular crown; Bark grayish brown, longitudinally split, split into irregular slices and fall off; Branchlets are usually straight or slightly curved. Branchlets with scales are nearly cylindrical or quadrangular, with a diameter of 1- 1.2 mm. Leaf type II, namely spiny leaves and scaly leaves; Thorn leaves are born on small trees, old trees are all scales, and strong trees have both thorn leaves and scales; The scales born on the annual branchlets are trilobal, straight and compact, nearly lanceolate, slightly pointed at the top, 2.5-5 mm long, with elliptic concave glands near the middle of the back; Thorn leaves alternate, spread obliquely, loose, lanceolate, tapering at the top, 6- 12 mm long, concave at the top, with two white powder bands. Dioecious, sparsely coextensive, male cones are yellow, oval, 2.5-3.5 mm long, with 5-7 pairs of stamens, usually with 3-4 anthers. Cones are nearly spherical, 6-8 mm in diameter, mature in two years, dark brown when mature, stripped of white powder or white powder, with 1-4 seeds; Seeds are ovoid, flat, blunt at the top, with ridges and a few resin grooves; 2 cotyledons, unearthed, strip-shaped, length 1.3- 1.5 cm, width 1 mm, sharp apex, with two white stomatal bands below, which are not obvious above.

Propagation grafting of juniper and cypress

Two-year-old (1 annual strong seedlings can also be used) Platycladus orientalis or Sabina vulgaris is often used as rootstock for grafting, and the scion is selected from the top of the lateral branch of the strong seedling mother tree, which is 10- 15 cm long. Open field grafting can be carried out in early March, and indoor grafting can be advanced to1-February, but after grafting, internal heat preservation should be done, and then the nursery should be transplanted in the middle and late March. The grafting method is abdominal grafting, in which the scion is cut from the lower part of the scale leaf and abdominal grafted to the root neck of the rootstock, and all the branches and leaves of the rootstock are reserved. After grafting, the soil near the scion is covered or covered with plastic film to maintain high air humidity. After survival, thin fertilizer can be applied to trim the top of the rootstock, and the upper nodes of the rootstock can be cut off in the next spring.

Cutting propagation method