plant arrangement in spring. ferns polypodiopsida, in the foreground, yellow irises in the middle of the picture, purple

andromedotoxin arrangement background beauty bloom blooming blossom botany bright class color colorful diterpenes early ferns flora floral flower foreground fresh garden genus grayanotoxin grayanotoxins green ingredients irises june leaf leaves may middle natural nature nectar outdoor petal picture plant poisonous pollen polypodiopsida purple red rhododendrons spring usually yellow