koehne mountain ash (sorbus koehneana) turning it's leaves yellow and later red and bearing white fruits in autumn

defoliation fall koehne mountain ash sorbus koehneana anthocyanin autumn background beautiful biology botany bright carotenoid chlorophyll close colorful colours environment foliage fruits green leaf leaves nature orange outdoors pattern peaceful perfection plant red season shedding shrub tanin tree vibrant wallpaper warm white yellow turning it's later bearing