Propagation and cultivation methods of sunflower

Loose-tailed sunflower is a tufted evergreen shrub or small tree, which can reach more than 2 meters in the basin. Because of its beautiful plant shape and shade tolerance, sunflower is an ideal indoor foliage plant. The editor will introduce you about the breeding and cultivation methods of sunflower, and friends who like it can learn about it.

Sunflower with loose tail

I. Propagation methods

It is mainly propagated by the method of dividing plants. The basin is divided once in about 3 years. In North China, it can be combined with pot-changing ramets in mid-late April. Select the basin with more tillers, deduct the plant, remove part of the old soil, and divide it into 2 to several clumps. There are at least more than 2 seedlings in each clump, and pay attention to maintaining a beautiful plant shape. In the room with higher temperature after planting, the recovery was faster when the temperature was above 20 ℃.

2. Cultivation methods

Potted sunflower can be cultivated with rotten leaf soil, peat soil and 1 to 3 river sand or perlite and base fertilizer. From May to October, liquid fertilizer was applied every two weeks. Loose-tailed sunflower prefers a semi-overcast environment, and about 50% of the sun should be covered in spring, summer and autumn. Greenhouse cultivation does not cover the light in winter. Loose-tailed sunflower likes high temperature and humid environment and is very afraid of cold. The temperature should be above 15 ℃ at night in winter and about 25 ℃ in daytime. If it is less than 5 ℃ for a long time, it will suffer frost injury. In the growing season, it is necessary to keep the basin soil moist and the higher air temperature around the plant. Keep the leaf surface clean in winter, but often spray a small amount of water or scrub the leaf surface.

Cultivation and management of loose-tailed sunflower

Loose tail sunflower (scientific name: Chrysalidocarpus lutescens H. Wendl.): also known as yellow coconut, Aoi Murasaki. Tufted evergreen shrubs or small trees of the genus Palmaceae. The stem is smooth, yellowish green, without burr, covered with wax powder when tender, with obvious leaf marks and ringed striations. The leaf surface is slippery and slender, pinnatifid, long 40~150cm, petiole slightly curved, apex soft.

Sex likes warm, humid, semi-overcast and well-ventilated environment, afraid of cold, weak cold tolerance, young trees potted for interior decoration; native to Madagascar, Africa, and now commonly cultivated in some garden units in southern China; it has related therapeutic effects on hemoptysis, metrorrhagia and so on.

Loose-tailed sunflower can be sowed and cultured. The seeds used in sowing and breeding are not suitable to be collected domestically and are mostly imported from abroad. In general, potted plants are cultivated by ramets. Ramet culture can be done all the year round. In April or so, combined with basin change, select the plants with many tillers in the basal part, remove part of the old basin soil, and divide it into several clumps from the base joint with a sharp knife. The wound needs to be disinfected with plant ash or sulfur powder. Each clump should not be too small, there should be 3 trees per clump, and the root system should be retained; the newly planted plants should not be exposed to strong light for a long time because the root system is not yet well developed. Water properly and spray water to the leaves several times a day to keep the leaves moist. Curing at the temperature of 20-25 ℃, the recovery molding is faster. Generally, it can become a potted commodity after 1-2 years of maintenance. Otherwise, the growth is slow after ramet, and the ornamental is affected. After planting, it was placed in a high humid temperature environment, and often sprayed with water to facilitate the recovery of growth. For those who can obtain seeds, wash the pulp of the harvested fruit, soak the seeds in 35 ℃ warm water for two days and sow them. Transplant as it germinates. Spray more foliar water on a sunny day. Generally speaking, the growth is slow in infancy and rapid in adulthood. Indoor potted sunflower should choose acidic soil, and sandy loam with high humus content should be selected in the north. The culture soil can be prepared with rotten leaf soil, peat soil plus 1 bank 3 river sand and part of base fertilizer. Its tillering bud growth is more on the rhizome, potted, because it is a little deeper than the original, so as not to better root new buds. The period from May to October is the prosperous period of its growth, so it is necessary to provide sufficient water and fertilizer conditions. Watering should follow the principle of "dry and wet" according to the season, more watering should be appropriate in the dry and hot season, and watering should be controlled in low temperature, overcast and rain. In the northern region, especially where there is more salt and alkali in the water, attention should be paid to the frequent use of black alum to regulate soil acidity. Always keep the basin soil moist at ordinary times. Summer and autumn high temperature period, but also often maintain a higher air humidity around the plant, but avoid basin soil stagnant water, so as not to cause rotten roots. Generally, rotten liquid fertilizer or compound fertilizer is applied every two weeks to promote plant growth, thick green leaves, appropriate topdressing of nitrogen-containing organic fertilizer in summer, and organic flower fertilizer such as sesame sauce residue in winter while keeping the pot soil dry and wet. Loose-tailed sunflower likes warmth, and the optimum growth temperature is 20-35 ℃. If more than 35 ℃ or less than 10 ℃, the foot leaves will change from green to yellow if there is a little improper cultivation and management. Summer should be shaded, the most avoid the direct sun, even if a short period of exposure will also cause the leaves scorched yellow, it is difficult to restore. It is necessary to do a good job of heat preservation and anti-freezing in winter, generally about 10 ℃ can survive the winter safely, if the temperature is too low, the leaves will turn yellow, the leaf tip will dry up, and lead to root damage, affecting the growth of the coming year. It likes semi-overcast and should be shaded by 50% in spring, summer and autumn. In indoor cultivation, ornamental should be placed in a place with strong scattered light; it can also withstand dark environment, but it should be moved to outdoor light regularly for better maintenance to facilitate recovery and maintain a high ornamental state. If the environment is dry and poorly ventilated, red spiders and shell insects are easy to occur, so it should be sprayed with 800 times omethoate regularly. Rotate the flowerpot regularly, often trim the lower and inner withered leaves, and pay attention to trimming the crown shape. Culture methods of Sunflower | cultivation techniques | morphological characteristics | Culture methods of Sunflower in producing area and habits | cultivation techniques | morphological characteristics | Origin and habits

Sunflower belongs to the evergreen shrub of Palmaceae.

Origin and habits: originating from Madagascar, there are many pots in all parts of our country. Loose-tailed sunflower prefers a warm and humid environment, and light is more resistant to shade. The height grows slowly, the crown width develops fast, and the natural pruning is good. Require slightly acidic sandy loam with good air permeability, avoid alkaline soil.

Morphological characteristics: plant height is 3 to 4 meters. Stems branched from the ground, ringed; leaves extended arched, up to 2 meters long, petiole smooth, yellow, pinnae lanceolate, 60 cm long, apex soft, abaxial main veins 3, raised; flowers small, string, golden yellow, florescence from March to April.

Culture technology: loose-tailed sunflower sowing and ramet can be cultured. In general, potted plants are cultivated by ramets. Ramet culture can be done all the year round, but autumn is the best. From the strong growth of the mother plant to the well-developed branches, cut off from the root and the mother plant, moved into a new basin and re-planted. The newly planted plants should not be exposed to strong light for a long time because the root system is not yet well developed. Water properly and spray water to the leaves several times a day to keep the leaves moist. The temperature is kept at about 20-25 ℃ and can grow normally in about 20 days.

Management techniques: indoor potted sunflower should choose acidic soil, and sandy loam with high humus content should be selected in the north. Watering should follow the principle of "dry and wet" according to the season, more watering should be appropriate in the dry and hot season, and watering should be controlled in low temperature, overcast and rain. In the northern region, especially where there is more salt and alkali in the water, attention should be paid to the frequent use of black alum to regulate soil acidity. Liquid fertilizer can be applied all the year round, nitrogen-containing organic fertilizer can be applied properly in summer, and organic flower fertilizer such as sesame sauce residue can be applied in winter. Rotate the flowerpot regularly, often trim the lower and inner withered leaves, and pay attention to trimming the crown shape. The indoor temperature must be kept above 10 ℃ in winter.

Ornamental value: the sunflower plant is tall, the leaves are green, and the potted plants in the north will be arranged smoothly. The hall and hall are particularly magnificent.