Aloysia citrodora botanics bush gardening green herbs leafs lemon verbena nature oil plant plant summer verbena flower flowers hanging petals pink plants garden purple field spring violet wild nature background close details flowering plant petal Plant stem rural valerian wildflower bedding grow head lilac natural perennial purple.mauve see through slender slim tall thin Aster Buddleia butterflies Ceratostigma Cimicifuga Clethra Cotoneaster Hebe Helichrysum Hemp agrimony insect ivy marigold Michaelmas Daisy mint nettles Sedum Vanessa atalanta