How to Cultivate the American Trumpet Vine
The United States trumpet vine is one kind of bignoniaceae. Every year when the summer coming, there will be a group of orange flowers on annual shoot branches. Its leaves are mostly 11-13 pieces, corolla color is dark orange, calyx tube has no edge, the flowering period is in October as well as it is widely cultivated in China. The leaves of some other trumpet vines stay in the same species with United States trumpet vine are 7-11 and sometimes are 9, the flower also is big and calyx tube shaped like. In addition, there are five edges of the flower which is the characteristics of this flower.
American trumpet vine is origin from North America and they like sunshine very much. With a lot of clustered roots, it has strong climbing ability as well as it can attach to the trees and walls. It has strong resistance to cold. The soil condition for it is not strict and it can grow well in the wet fertile soil. The breeding of the American trumpet vine always use the methods of cutting, ramets and planting. The method of cuttings is to cut its raw roots of the tender in the growing season and we should pay much attention to shade, moisturizing cutting to make the root alive.
Early spring season, cut 20 cm annual branches to cuttings and after about two months, there will be root. In addition, with its root in the soil to have root cutting can also easy to take root. In the early spring, cut the underground root into 10 cm long and buried it in the soil, it will germinate after 3-4 months. Around the American trumpet vine, the underground roots will germinate a lot of seedlings until March to April when it is planted. The use of pressing method is generally carried out in May – June, if the press method is correct, each section can take root.
Because the American trumpet vine has a strong ability to climb, the grower often provide some shelf for flowers climbing. The flowers grow in the balcony or the west drying wall can not beautify the 
environment, but also to block the summer strong sunlight, reduce the indoor temperature. This flower is also suitable as a potted ornamental. In order to obtain a good viewing effect, bamboo and other materials can be used to build a variety of graphic or animal shape. In the growth process of its branches, support, guidance and fixed are necessary because it can make the branch climb as human willing and grow into a beautiful shape.
American trumpet vine daily maintenance is relatively simple. If you want its flowering, you should let it enjoy t the sunlight absolutely. During growth and flowering period, you should apply 20% of the cake fertilizer 2-3 times a month. After the first batch of flowers in the summer, the branches can be re-cut, only need to stay l to 2 section, so that germinate new branches. After pruning, add pouring 2-3 times compound fertilizer, you can achieve affluent flowers and leaves.
As the American trumpet vine branch have large pulp so that old branches easy to hollow. After winter, there will be a lot of dead branches. Therefore, you should prune in the spring before germination. However, you do not need to cut short branches, because the flower buds are mainly distributed in the top of the last year. Generally cut short branch only after the flowers to promote the second flower or new branch of next year. In addition, in the growth season, the excess old roots should also be properly removed.
The article translated from: http://www.uuuu.cc/zl/yuanyi/2012/0428/15547.html