blossoms bright budding buds climber climbing clinging colors colours creeper cultivar decorative delicate display displayed flora floral flowering flowering-plant flowers foliage garden green greenery intertwined light nature ornamental petals plant plants red soft spring stamen trellis vine appearance Asian bloom blooms color colored colorful colour coloured colourful decoration distinctive evergreen flower flowering plants landscape plant leaves ornamental plant purple shade shadows sunlight tropical vivid white yellow bell-shaped biennials blooming clump-forming cultivars Digitalis downward-facing erect exotics flower-spikes foxglove garden-flowers garden-plants herbaceous horticultural horticulture mottled perennials potent-glycosides shape shaped shapes tall-spikes textures toxic toxicity tubular unusual whorls