Altissima means tall. Again your choice. Indisputable is that fact that it grows fast. Young trees can make six feet of growth in a single season. It can grow easily where other plants struggle.
Suckers sprout from the roots and form copses.
Ailianthus are survivors. Although once sold as a landscape ornamental, ailianthus has little if any commercial value. As with other rapidly growing trees the wood is soft and weak. It is invasive. The foliage has an unpleasant smell when crushed and the blossoms of the male tree have a vile smell.