1. Flowering or reaching maturity later in the growing season
   "Chrysanthemums are common late-blooming plants";
   - autumn-flowering, autumn-blooming, fall-flowering [N. Amer], fall-blooming [N. Amer], late-flowering
    
2. Developing, maturing, or achieving success relatively late
   "He was a late-blooming artist who found success in his fifties";
   - late-flowering

See also: autumnal