Frangula Alnus Fine Line, 20LAn attractive, deciduous, columnar shrub, perfect for a small garden or to use as a screen, Frangula Alnus Fine Line has fine, upright, multi stems giving the appearance of bamboo but without its invasive nature. The leaves change from green to buttery yellow in autumn before falling. It bears insignificant white flowers in summer, which turn into bright red berries, ripening to black.