background colorful colourful fast-growing flowerheads garden shrub hardy Lantana noxious weed orange showy shrub texture textures thicket tubular flowers weed weed of significance yellow Apiaceae creepy dead England english Finished flower flowerhead giant hogweed Great Britain head Heracleum mantegazzianum invasive macabre natural nature plant spent stem Sussex toxic umbel umbellifer wild bee gathering insect nectar animal antenna butterfly Centaurea feed feeding knapweed Lepidoptera proboscis rhopalocera skipper small small skipper suck sucking summer Thymelicus tiny tongue wing bright clusters danger dark foliage golden green light sunlight anthuriums araceae climbers color coloration colour cultivars cylindrical-spike decorative distinctive epiphytes evergreen exotic flamingo-flower flamingo-lily fleshy-spike flora flowers glossy herbaceous humidity-loving hybrids inflorescence laceleaf modified-leaf painted-tongue perennials poisonous red shapes shield-shaped shiny smooth spadix spathe species surface surfaces surfacing tail-flower toxicity tropical waxy