This is the newest hybrid group. They tend to be faster growing with a longer flowering season and more tolerant of full sun for part of day (prefer morning sun). As their name reflects, they flower in spring and again in autumn.
Developed from Kurume and Southern Indica parents, there are currently 25 evergreen varieties, all cultivar names begin with the word "Autumn". They are small (to 1m) medium (to 1.3m) and large (to 1.8m) shrubs. Many of these hybrids are cold hardy to Zone 6.