If you have a small yard this tree would not be for you. It is mainly a street tree or for large parking lots. I would be concerned if you had it in your yard with hurricane force winds.

This is one of only a few deciduous trees which grow in tropical and subtropical areas of the country. A profusion of large, three-inch wide, bright pink to lavender blooms appear in dense, foot-long, terminal panicles from June to July, making Queen's Crape-Myrtle a spectacular specimen or street tree. This large, upright rounded, deciduous tree is clothed with 12-inch-long, dark green, oblong, leathery leaves which turn attractively red before falling in winter. Queen's Crape-Myrtle can reach 40 to 60 feet in height and a spread of 30 to 40 feet. The attractive bark is smooth, mottled and peeling. In India, the wood is used for railroad ties and construction. The bark is thin and easily injured.

Here is a link that might be useful: Propagating Perennials

Wow what a great tree. I wish those would make it up here, although I am quite happy with the regular crepe myrtles.

Here's the source of bullthistle's quote if anyone wants more info.

Here is a link that might be useful: University of Florida Copyrighted Document