Pittosporum, also known as Pittosporum flower and alum. Pittosporum is a small evergreen tree or shrub with a height of 3 meters. Do you know what the flower language of Pittosporum stands for? The following is a collection of flower words about Pittosporum, hoping to help you.

The Flower Language of Pittosporum

Please remember me

Morphological characteristics of Pittosporum rubrum

plant

Pittosporum is an evergreen shrub or small tree with a height of 6 meters, brown hairy branches and lenticels.

leaf

Pittosporum leaves clustered at the top of branches, biennial, leathery, pilose on both sides when tender, bald at the back, obovate or obovate-lanceolate, 4-9 cm long, 1.5-4 cm wide, dark green at the top, shiny and dull after drying, round or dull at the top, often slightly concave or slightly heart-shaped, with narrow wedge-shaped base and 6 lateral veins.

Pittosporum leaves are leathery, obovate, round at the top, clustered at the top of branches, showing a false whorl shape. After long-term culture, stamens are often degenerated and sterile, and the seed setting rate is also low. Smooth and dense leaves, strong germination, pruning resistance and easy modeling are widely used in shrub balls, hedgerows and modeling trees.

flower

Pittosporum is a terminal or sub-terminal umbel or umbrella umbel, densely covered with yellow-brown hairs, and the pedicel is 1-2 cm long; Bracts lanceolate, 4-5 mm long; Bracteoles 2-3 mm long, all covered with brown hairs. Flowers are white and fragrant, and then turn yellow; Sepals ovate, 3-4 mm long, pilose; Petals oblanceolate, long 1- 1.2 cm, free; Stamens are type 2, filaments of staminodes are 2-3 mm long, and anthers are nearly sterile; Filaments of normal stamens are 5-6 mm long, anthers are 2 mm long, rectangular and yellow; The ovary is oval, densely pilose, with three placentas on the lateral membrane and many ovules, two of which are arranged in the middle of the placentas.

fruit

The capsule of Pittosporum pittosporum is spherical, angular or triangular, with a diameter of 65,438 0.2 mm, some of which are hairy. The ovary stalk is 65,438 0-2 mm long, and it is divided into 3 pieces. The fruit pieces are woody, with a thickness of 65,438 0.5 mm, and the inside is yellow-brown, shiny and flat. There are many seeds, 4 mm long, polygonal, red, and the stalk is about 2 mm long, with mucus.

The flowering period of Pittosporum is from March to May, and the fruit maturity is from 9 to 65438+10.

Ecological habits of Pittosporum

Pittosporum has strong adaptability to climate, and is cold and heat resistant. South of the Yellow River basin, you can safely overwinter in the open field. It has strong adaptability to soil and can grow normally in clay, sandy soil and mild saline-alkali soil. It has strong resistance to sulfur dioxide, hydrogen fluoride, chlorine and other toxic gases.

Pittosporum can safely spend the summer in full sunlight in South China. It grows best from the Yangtze River basin to the north of Nanling. To the north of the Yellow River, potted plants are often used and kept indoors for winter protection. It also has strong adaptability to light and is more resistant to shade and scorching sun, but it grows best in semi-shade.

Pittosporum likes light and grows well in the shade. It can be placed outdoors in summer, and in the shade if possible. Strong light is harmless to plants. I like warm and humid climate and fertile and humid soil, and can resist slight salt, wind and moisture. The optimum growth temperature is 15-30℃. Put it in a cold but not frozen room in winter. Pittosporum can tolerate freezing temperature, but in order to make it grow well, the lowest temperature at night should be kept above 65438 03℃.

Cultivation techniques of pittosporum rubrum

Soil requirements

Pittosporum is drought-resistant. Water consumption is high in summer, so water it frequently; If the temperature is low in winter, the amount of watering should be reduced accordingly. The air humidity should be around 50%. Fertile soil is needed. Fertilize 1-2 times a month during the growing season, and no fertilization is needed at ordinary times. Young plants change pots every year, and adult plants change pots every 2-3 years. The basin is composed of 1/3 humus and 2/3 clay or loam. Strong germination and pruning resistance. It can be trimmed into various shapes every spring.

Planting season

Pittosporum is easy to cultivate and does not need special management. Transplanting in the open field is usually carried out in March. If planted in autumn, it should be around 10. Before digging, the big seedlings must be tied with ropes to prevent the branches from breaking, and the soil balls must be brought when digging. The size of the soil ball depends on the thickness of the trunk. Seedlings can be transplanted with bare roots, but in time. Potted pittosporum is changed once a year in spring. When changing pots, the dead roots should be cut off and new culture soil with more organic matter should be added to the pot soil.

Pittosporum has strong branching ability and is resistant to pruning It needs pruning and shaping in spring to keep a beautiful tree shape. If you want to inhibit its growth and make its branches and leaves multiply, you should cut off its top when it grows to a corresponding height. Others cut it into various forms. It can be placed outdoors in summer, and in the shade of flowers if possible. Strong light is harmless to plants. The air humidity is about 50%. The suitable growth temperature is 15-30℃, and the lowest temperature in the cold room without freezing in winter is 5℃. Water consumption is high in summer, so water it frequently; If the temperature is low in winter, the amount of watering will be reduced accordingly. Fertilize once every two weeks in the growing season, and do not use rotary fertilizer in other periods. Although Pittosporum is shade-tolerant, it should not be planted in the shade, and the plants should not be too dense, otherwise it will be easily invaded by flies, which often cluster when flowering, so attention should be paid to prevention and control.

Potting technique

Pittosporum potted plants can be made into various forms of bonsai through artistic processing. The upper basin should be planted in a deep basin, and a circle of hard plastic cloth with a height of 5-8cm should be added to the upper part of the inner edge of the basin, and the bottom of the basin should be padded with broken tiles. The root can be raised correspondingly when the pot is put, and the pot soil is slightly lower than the plastic ring, so that deep pot shallow planting will not affect the survival. When new roots grow and branches and leaves flourish, remove the plastic ring, and then use water and rain to wash away the soil above the basin surface, so that the thick roots are gradually exposed, which can achieve the purpose of hanging roots in advance, exposing claws and marveling at the past.

Breeding model of Pittosporum rubrum

Pittosporum can be propagated by sowing or cutting.

The capsule of Pittosporum 10- 1 1 ripens in1October, and the peel turns from green to yellow when it ripens. The seeds are hidden in mucilage, and the aril is bright red, oily and shiny. The collected fruit will be spread out for a few days. After the peel cracked, the seeds were knocked out. Wet water mixed with plant ash rubbed off the aril and colloid, and then washed the seeds to get clean seeds. The seed rate of fruit is about 65438 05%. The 1000-grain weight of seeds is 22-27 grams, so they should be stored in mixed wet sand.

Sowing in the middle of March of the next year, the germination rate of drilling seeds is about 50%. Seedling growth is slow, and it usually takes 2 years for seedlings to grow in pots. 3-4-year-old seedlings should be taken out of the nursery for planting. In early spring, before the new leaves germinate, cut 1-2-year-old shoots, cut a section every 15 cm, and insert them into the wet sand bed. Shading, spraying and moisturizing, rooting in about 20 days, 1 month and a half, moving into the nursery for cultivation, potted or out of the nursery for 2-3 years. In normal management, we should pay attention to maintaining tree shape, properly watering in drought and applying 1 double base fertilizer in winter.

The main value of pittosporum

Garden use

Pittosporum flowers are luxuriant in branches and leaves, with spherical crowns and lower branches covering the ground; The leaves are thick green and shiny, and they don't fade in winter. The flowers in early summer are beautiful and fragrant, and the fruits in autumn split to reveal red seeds, which is also quite beautiful. Usually it can be planted as a hedge, or it can be planted alone, clustered by grass, forest or door, and planted by the roadside. Because of its ability to resist tide and toxic gas, it is also an important tree species in coastal moisture-proof forest, windbreak forest and mining area greening, and is suitable for being used as the next grade wood of urban sound-proof and fire-proof forest belt.

In warm climate, this tree species is an ideal flower bed landscaping tree or landscaping tree. Do more houses, foundation planting, hedges. Plant potted plants in the north and use greenhouses in winter.

Decorative application

Round, evergreen all the year round, fragrant with red seeds, it is a famous foliage and fruit viewing plant. It has strong resistance to harmful gases such as sulfur dioxide and is an environmentally friendly tree species.