Selection of Poa pratensis in courtyard greening

Eupatorium adenophorum ) belongs to Orchidaceae, which is a dicotyledonous and perennial herb. The leaves are clustered from the stem, and the linear orchid leaves are evergreen all year round. They are complex but not chaotic, prone and comfortable, graceful and unique. There has been a saying in China since ancient times that orchids value their leaves and flowers. Its flowers are ordinary, but they are not gorgeous and elegant. They are deeply loved by the people of China, and they are also called "Four Gentlemen" with bamboo, chrysanthemum and plum. Racemes, perianth with 2 whorls, fleshy, inner whorl with 3 petals, 2 petals upright, lower petal lip-shaped, rolled outward, with or without purplish red spots on it, stamens and styles combine to form Gynostemma pentaphyllum, and the color varies from yellow-brown to light yellow, which is different from the solid color without brown. The budding fruit is triangular, and there are few kinds. Grass is used as medicine. Has the effects of clearing away heat, relieving summer-heat, eliminating dampness, invigorating stomach and stopping vomiting. The flowering and fruiting period of orchids is July-165438+1October.

"Eight Skills" in Choosing Poa pratensis

First, the requirements for orchid leaves: the leaf base (bean) is hard, thin and upright; The middle leaves are wide and thick, strong and soft, the tail is slightly drooping, the tail tip is blunt and round, the pocket is hard, and the top is slightly upturned. The medium of the leaves is fine, waxy and dense, and the leaves are semicircular with grooves in the middle. The wax is slightly bright and smooth to the touch. The color of the whole leaf is pure and single, and the color difference between the old and new leaves is small, with light green as one, green as two and old green as two. The main veins of leaves are light and bright, the lateral veins are shallow and flat, like hidden dew, and the veinlets are long and reach the tip of leaves. The leaf margin has obvious white or yellow virtual light edge, the tip is white or yellow and transparent, and the peak is the top.

Second, the requirements for the grass foot shell: the grass foot shell is tall and straight, tight and round, shaped like eight hairy feet. The shell pieces are many, short and wide, and the tip of the shell is close to the straw bundle and does not buckle backwards. It doesn't matter whether the shell is sharp, thin or hard. Shell color must be bright and pure, accompanied by sand halo or extraordinary splendour spot halo such as pearl powder, from bottom to top, from light to gradually sharp, and the shell tip is topped by snow peak, green peak, red peak or extraordinary splendour peak. If the peak is inward, it will be more upward. The shell will be bright and the veins and sand will be brighter.

Third, the requirements for the fake scale ball: the fake scale ball is big and round, with white or green crystals, and the water chestnut, arrow and garlic are the best shapes.

Fourth, the requirements for the orchid root: the orchid root should be smooth and full, the thickness should be even and straight, the texture is delicate and the color is white. Chunlan is topped with a thin circle, and the spring sword is topped with a thick square root.

5. Requirements for grass insects (buds): The newly germinated grass insects are full, pearl lotus-shaped or hemispherical convex, and the tip of the bud-protecting membrane shell is harmless, and there must be good petal-shaped flowers. Before leaf splitting, the shell, veins and color of grass buds change from shallow to deep, but the color is stable. Please refer to the second formula for specific shell, pulse and color.

6. Requirements for flower insects (flower buds): The flower buds have been unearthed for more than one month, and those with big drums and tight circles have many petals or exotic flowers and grasses. If the bud shell is plain or hemp, there will be more plain flowers or light-colored twists. If the color of bud shell is heavier and the hemp sand is stronger, there will be more halo twist, color heart flower and coarse twist. Touch the bud shell (bell) by hand. If it is tight and round, and the upper part is empty and flat, plum petals will appear. If the clock is shaped like an olive fruit, it will be different from the lotus; It is expected that there will be a bald head at the tip of the shell, or a color wheel will be hung at the edge of the shell. If the bud shape is odd, it is expected to be odd. The beard is full of sand, dizzy, colorful, thick and wrinkled, which makes the butterfly look forward to it.

Seven. Requirements for delicate and charming (gorgeous) flowers: Most delicate and charming flowers come from light-colored shells, and the colors of leaves are relatively light and consistent. Those with delicate green shells, white emerald green, pale white and yellow silvery red shells have more delicate red, white, pink and emerald green flowers. Those with deep red shells, old silver red shells, yellow purple shells and turmeric shells have many delicate flowers such as tooth yellow, turmeric and golden yellow. Dark green hemp shell, dark purple hemp shell and fine sand halo, dark green and purple hemp halo flowers are more. Those with different colors of shell tips and those that reach the left and right are expected to have different colors of twists.

8. Requirements for hybrid variant orchids: The hybrid of orchid species produces more variant flowers with obvious essential leaf characteristics. This kind of leaves have thick and soft veins, waxy and shiny leaves, crystal clear or light gray leaves, and obvious hybrid variation characteristics. The sand halo of the foot shell is mottled with moire, and the shell veins are short and intermittent. Those with thick veins and thin roots or hybrids between cymbidium and cymbidium have more petal-shaped flowers. If the veins are thin, the roots are thick and square, or Chunlan crosses with other orchids, there will be more mutant flowers. Each of the above eight tips is to choose the desired variety. You should know that anyone who does not have or already has different characteristics from ordinary bluegrass can be selected for trial planting as long as the characteristics are obvious and have personality. Some grasses are not up to standard, but good flowers are hard to get. This fully embodies the unpredictable, mysterious and attractive charm of orchid genes, which is often difficult to assert.

For details, please refer to /p/4442095674 Various Related Issues in Garden Conservation.