Does crape myrtle have any special requirements for the growth environment?

Ziwei, alias prurigo, ginger. It is a small deciduous tree belonging to Lysimachiaceae, with 7 meters high and curved branches.

Slippery, the bark falls off in pieces in autumn and winter. Branchlets slightly quadrangular. Leaves opposite or subopposite, elliptic, entire, first

The blade tip is sharp, the base is wide and round, the leaf surface is smooth and hairless, and the back of the leaf is hairy along the midvein. The flowers are conically clustered at the top of the branches, and the perianth is shriveled.

Bright red, pink or white. The flowering period is from July to September. The new fruit is oval, 65438-065438 ripens in February.

Originated in South China, Central China, East China and Southwest China. Sex likes sunshine and calcareous fertile soil, and is resistant to early and afraid of waterlogging.

Lagerstroemia indica is a very interesting flower tree, which has a characteristic: "Lagerstroemia indica blooms for a hundred days, caressing branches and moving trees."

Therefore, Lagerstroemia indica is also called itchy tree. Lagerstroemia indica has graceful posture, curved branches and bright colors, and blooms in summer and autumn with few flowers.

Flowers are important ornamental trees in summer and autumn gardens.

The roots, leaves and skins of Lagerstroemia indica have the effects of clearing away heat and toxic materials, promoting blood circulation and stopping bleeding.

33) Lagerstroemia indica

▲ Ziwei. length

Yang Wanli, a poet in the Song Dynasty, praised: "It is better to be infatuated, especially to expose and oppress the wind." Who knows that flowers bloom for a hundred days and crape myrtle grows for half a year. Xue Hui of the Ming Dynasty also wrote: "Osmanthus fragrans is the longest, rotten for ten days, and new flowers continue to grow branches after summer and autumn. "Ziwei has existed since ancient times and is a very common greening plant. It is often planted in isolated areas, and its leaves, branches and trunks are very special.

Lagerstroemia indica is a flowering shrub, also known as skinless tree, full house red and hundred days red. Due to the special flowering period, it blooms continuously from July to 10, hence the name Hundred Days Red.

The trunk of Lagerstroemia indica is very sensitive to vibration, and people commonly call it "ticklish tree". It is said that when a person touches it lightly, it will immediately shake the leaves, tremble all over, and even make a faint "giggle" sound (but I tried it, and it didn't feel so strange. I don't know if I need skills). People in the north call Lagerstroemia indica a "monkey thorn", which means that the tree is too slippery for monkeys to climb (when Lagerstroemia indica grows up, the trunk epidermis falls off and is very smooth).

Yang Wanli, a poet in the Song Dynasty, praised: "It is better to be infatuated, especially to expose and oppress the wind." Who knows that flowers bloom for a hundred days and crape myrtle grows for half a year. Xue Hui of the Ming Dynasty also wrote: "Osmanthus fragrans is the longest, rotten for ten days, and new flowers continue to grow branches after summer and autumn. "

The leaves of Lagerstroemia indica are also very interesting. The leaves of ordinary plants, whether opposite or alternate, mostly grow on the same plane, but Lagerstroemia indica is particularly special: on both sides of the branches, at about 45 degrees of a pair of leaves, a pair of leaves grow, with the branches as the axis, and four rows of leaves are scattered and not covered. It is simply a "master" of scientific use of sunlight-viewing leaves is also a scene.

Osmanthus fragrans is a panicle with a spherical bud, which is inserted at the top of the new branch and is 20 cm long. Each flower has 6 petals, and the petals are wavy, like the hem of a little girl's skirt.

Generally, deciduous plants only "defoliate" in winter, but Lagerstroemia indica is different. When autumn and winter arrive, not only the leaves fall, but also the branches are all gone, leaving only a few bare trunks, and branches and leaves will grow again in the next spring.

Lagerstroemia indica originated in China, distributed in the Yangtze River valley, and also cultivated in South China, Northwest China and North China. It is reported that there is a precious Lagerstroemia indica tree with a history of more than 600 years in Hantai District, Hanzhong City, Shaanxi Province, with a root circumference of about 60 cm and a height of 10 m. It is said that Zhu Yuanzhang, the founding emperor of the Ming Dynasty, specially gave the palace tribute tree to the Ming Palace Museum. Ziwei can adsorb dust. In the cement plant, 200-250 meters away from the pollution source, leaves can absorb 4042 grams of dust per square meter. Therefore, it is the ideal tree species for urban, industrial and mining greening, and can also be used as bonsai. Ziwei is a shrub (or small tree), neither high nor low. It is generally planted in the isolation belt to match the arbor lawn.

Flowering: June-August

● Location: Liubukou, Lugu Community, Shijingshan District

● Shooting time: April 4th, July 3rd, July 9th, 2006 65438+1October 6th.