the butterbur, a medicinal plant gowing wild in ireland

asteraceae background butterbur close coltsfoot cover curl curled curly drinkwater fibonacci flower foliage fuki garden gardening generic giant great green ground herbaceous horticulture ireland japonicus lamina landscape large late leaf leafy leathery leaved leaves medicinal nature nautilus number perennial petasites plant planting ros spiral spiraled spring stripes sweet twist waxy wild wildflower