appearance bell-shaped biennials blooming blooms clump-forming colored colorful colors coloured colourful colours cultivars decorative Digitalis display distinctive downward-facing erect exotics flora floral flower-spikes flowers foxglove garden garden-flowers garden-plants herbaceous horticultural horticulture light mottled nature ornamental perennials petals plants potent-glycosides shape shaped shapes tall-spikes textures toxic toxicity tubular unusual whorls antenna beautiful black butterflies butterfly flower fly fragile green insect insects Lepidoptera life mariposa plant rhopalocera small summer wing wings yellow abundance ageratum annuals bedding bloom bloomimg blue-billy-goat-weed blue-billygoat-weed borders chick-weed clusters color colour containers cultivated edging exotic florets floss floss-flower fluffy fuzzy goatweed greenery hardy leafy leaves potting-plants profusion purple rock-gardens round soft weed wild bright brilliant daisy-like texture thick thin vibrant wallpaper brightly-coloured carpeting-plants clumps common drought-tolerant environmental-weed garden flowers garden-escape gazania gazanias golden introduced-species invasive lance-shaped leaves low-growing orange perennial prolific rapid-spreader resilient roadside-weeds South-African streaked tough vivid water-wise widespread wind-blown seeds autumn close-up Corylus filbert flowering hazel pitch tree twig blossom delicate pastel shades small garden summer hues translucent texture art background branch design flourish graphics hi-res illustration isolated pink red vector white background