Planting method and cultivation management of oleander

Oleander has strong adaptability, easy cultivation and management, and is relatively extensive in both field and potted plants. In the place where the plant is planted, the transplant should be carried out in spring and should be re-cut when transplanting. Oleander grows rapidly, mostly in a tufted shape, generally in June, it is appropriate to cut off the over-dense and over-long branches of oleander from the base. For trees that are too strong, another pruning should be carried out in September to maintain proper space between branches and branches. The main diseases are oleander brown spot, arbuscular disease, bacterial gall disease and so on. Carbendazim or methyl topiramate can be sprayed at the initial stage of the disease. The main pests are oleander purple butterfly, oleander aphid, orange cotton scale, brown soft scale, reticulated cotton scale and so on, which can be sprayed with trichlorfon or dichlorvos in larval or nymph stage. Potted oleander requires not only good drainage, but also adequate fertilizer and water. Shaping and pruning should be carried out after germination in spring, and the overgrown branches and slender branches in the plant can be cut off from the base; if the dense branches have been cut inside, it is also appropriate to sparse and cut a part of the branches, so that the branches are evenly distributed and the tree shape is rich. The basin should be changed once every 1 ~ 2 years, and the basin should be changed after pruning. Summer is the period of vigorous growth and flowering of oleander, which requires a lot of water. In addition to watering each day in the morning and evening, if the pot soil is too dry, one more spray should be added to prevent the twigs from wilting and affecting the flower life. After September, water should be deducted to inhibit the continued growth of the plant, make the branch tissue mature and increase the accumulation of nutrients in order to survive the winter safely. The overwintering temperature should be maintained at 8: 10 ℃, below 0 ℃, that is, the leaves will fall. Oleander is a fertilizer-loving plant, which should be applied once a month during the growing period in addition to sufficient basal fertilizer. Oleander stems and leaves are poisonous and should be paid attention to when pruning and cutting.

The cuttage propagation of oleander is mainly, and it can also be propagated by striping and other methods. Cutting can be carried out in both spring and summer. Cut the 2012 branches in spring, cut them into 15-20 cm segments, 20 or so bundled into a bunch, soaked in water, the depth of the water for the stem segment of 1 beat 3, every 1 to 2 days to change the same temperature water, the temperature is controlled at 20: 30 ℃, to be found in the water-soaked part of the adventitious roots can be cut. When cutting, holes should be made with bamboo chopsticks in the soil to avoid damaging adventitious roots. Because of the strong sprouting ability at the base of the old stem of oleander, a large number of tender branches are often produced, so these branches can also be fully used for summer softwood cuttings, that is, semi-lignified branches are selected as cuttings, and the top 3 leaflets are retained and inserted in the substrate. pay attention to timely shading and water management, the survival rate is also very high. When pressing and reproducing, the buried part is first cut or girdled and buried in the soil, which can be cut off from the mother in about 2 months, and then transplanted with soil the following year.

Key points of cultivation of oleander

Yellow oleander can be cultivated in the south of the Yangtze River Basin in China, but it can only be watched in pots in the north, overwintering indoors to avoid frostbite or even death. Yellow oleander likes light and fertilizer, but it is not resistant to water and moisture, and the tree is easier to recover after being damaged.

Yellow Oleander

The adaptability of oleander is strong, the cultivation and management is relatively easy, and it is relatively extensive no matter it is planted in the ground or in the pot. In the place where the plant is planted, the transplant should be carried out in spring and should be re-cut when transplanting. Yellow oleander grows rapidly, mostly in a tufted shape, generally in June, it is appropriate to cut off too dense branches and too long branches from the base. For trees that are too strong, another pruning should be carried out in September to maintain proper space between branches and branches. The main diseases are yellow oleander brown spot, arbuscular disease, bacterial gall disease and so on. Carbendazim or methyl topiramate can be sprayed at the initial stage of the disease. The main pests are yellow oleander purple butterfly, yellow oleander aphid, orange cotton scale, brown soft scale, reticulated cotton scale and so on, which can be sprayed with trichlorfon or dichlorvos in larva or nymph stage.

Potted oleander requires not only good drainage, but also adequate fertilizer and water. Shaping and pruning should be carried out after germination in spring, and the overgrown branches and slender branches in the plant can be cut off from the base; if the dense branches have been cut inside, it is also appropriate to sparse and cut a part of the branches, so that the branches are evenly distributed and the tree shape is rich.

The basin should be changed once every 1 ~ 2 years, and the basin should be changed after pruning. Summer is the period of vigorous growth and flowering of oleander, which requires a lot of water. In addition to watering each day in the morning and evening, if the pot soil is too dry, one more spray should be added to prevent the twigs from wilting and affecting the life of the flowers. After September, water should be deducted to inhibit the continued growth of the plant, make the branch tissue mature and increase the accumulation of nutrients in order to survive the winter safely. The overwintering temperature should be maintained at 8: 10 ℃, below 0 ℃, that is, the leaves will fall. Huanghua oleander is a fertilizer-loving plant, which should be applied once a month during the growing period in addition to sufficient basal fertilizer.

Cultivation and management of oleander

Yellow Oleander

Oleander has strong adaptability, easy cultivation and management, and is relatively extensive in both field and potted plants. In the place where the plant is planted, the transplant should be carried out in spring and should be re-cut when transplanting. Oleander grows rapidly, mostly in a tufted shape, generally in June, it is appropriate to cut off the over-dense and over-long branches of oleander from the base. For trees that are too strong, another pruning should be carried out in September to maintain proper space between branches and branches. The main diseases are oleander brown spot, arbuscular disease, bacterial gall disease and so on. Carbendazim or methyl topiramate can be sprayed at the initial stage of the disease. The main pests are oleander purple butterfly, oleander aphid, orange cotton scale, brown soft scale, reticulated cotton scale and so on, which can be sprayed with trichlorfon or dichlorvos in larval or nymph stage. Potted oleander requires not only good drainage, but also adequate fertilizer and water. Shaping and pruning should be carried out after germination in spring, and the overgrown branches and slender branches in the plant can be cut off from the base; if the dense branches have been cut inside, it is also appropriate to sparse and cut a part of the branches, so that the branches are evenly distributed and the tree shape is rich. The basin should be changed once every 1 ~ 2 years, and the basin should be changed after pruning. Summer is the period of vigorous growth and flowering of oleander, which requires a lot of water. In addition to watering each day in the morning and evening, if the pot soil is too dry, one more spray should be added to prevent the twigs from wilting and affecting the flower life. After September, water should be deducted to inhibit the continued growth of the plant, make the branch tissue mature and increase the accumulation of nutrients in order to survive the winter safely. The overwintering temperature should be maintained at 8: 10 ℃, below 0 ℃, that is, the leaves will fall. Oleander is a fertilizer-loving plant, which should be applied once a month during the growing period in addition to sufficient basal fertilizer. Oleander stems and leaves are poisonous and should be paid attention to when pruning and cutting.

The cuttage propagation of oleander is mainly, and it can also be propagated by striping and other methods. Cutting can be carried out in both spring and summer. Cut the 2012 branches in spring, cut them into 15-20 cm segments, 20 or so bundled into a bunch, soaked in water, the depth of the water for the stem segment of 1 beat 3, every 1 to 2 days to change the same temperature water, the temperature is controlled at 20: 30 ℃, to be found in the water-soaked part of the adventitious roots can be cut. When cutting, holes should be made with bamboo chopsticks in the soil to avoid damaging adventitious roots. Because of the strong sprouting ability at the base of the old stem of oleander, a large number of tender branches are often produced, so these branches can also be fully used for summer softwood cuttings, that is, semi-lignified branches are selected as cuttings, and the top 3 leaflets are retained and inserted in the substrate. pay attention to timely shading and water management, the survival rate is also very high. When pressing and reproducing, the buried part is first cut or girdled and buried in the soil, which can be cut off from the mother in about 2 months, and then transplanted with soil the following year.