| Crape-Myrtle (Lagerstroemia indica) is an important ornamental tree species in China which has long blooming season (June-Oct). In this paper, preliminary tree gesture selection of Crape-Myrtle is the main aim of research. At the mean time, methods of planting and propagation of Crape-Myrtle were studied. Its application in landscape was discussed and ancient wild Crape-Myrtle in Guizhou Province was investigated. The results indicated:1. Storage temperature has little influence on seed germination rate of Crape-Myrtle. Research result indicated that 4°C was better than normal temperature for short period storage, but there is no significant difference appearing. The seeds germination rate of 5 new sorts could still attain 80% after 3 months storage under different temperatures.2. The effect of culture media on Crape-Myrtle's seed germination rate was quite little. But temperature and humidity of seeding environment and water content of soil were important factors for most of the to-be cultivars.3. Sun light has a crucial effect on Crape-Myrtle's growth and blooming. The growing tendency, blooming number and blooming season will be significantly weakened in the shade.4. Rooting of Crape-Myrtle cuttings is easy. Soaking in 250 mg/lABT for 2 hours before cutting is the most suitable way for Crape-Myrtle cuttings.5. The evaluation of all the new to-be cultivars are according to their own characteristics. Meanwhile, standards for the eminent germplasms and their characteristics are also brought forwards in the study. In terms of "centesimal method", 11 eminent newly-named L. indica to-be cultivars are identified. The paper gives a brief discuss for the usage of Crape-Myrtle.6. During the study, the age and growing situation of an ancient wild Crape-Myrtle (L. excelsa) in Yongyi village of Yinjiang county of Guizhou, China, was investigated and it was considered as the oldest Crape-Myrtle which has been reported in China (even in the world).
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