clusters flowers garden heads herbaceous nature pale perennials petals phlox pink plants summer white Dactylorhiza praetermissa England english flowering plant Great Britain Herbaceous plant natural orchidaceae plant purple Southern Marsh orchid spike Surrey Terrestrial plant botanic bush flax flax field floral flower flowering green herb herbs linaceae linen linum bed border grow growth lush quality success Sussex Bird's-nest fungus Neottia nidus-avis orchid Plant stem fragrant orchid Gymnadenia conopsea lavender mauve spikes wild downland fabaceae Hippocrepis comosa Horseshoe Vetch Leguminosae petal yellow bloom butterfly fence Gaura perennial trellis red stems early purple orchid Hampshire Orchis mascula