Candytuft: A bright mixture for mid summer colour. Height 8in (20cm). Flowers June-August. Convolvulus: Bright blue-purple blooms with contrasting white and yellow centres. Height 12in (30cm). Flowers June-August. Californian Poppy: Rich shimmering colours iwth cottage garden appeal. Height 12in (30cm). Flowers June-September. Godetia: A riot of colour in many shades of pink and red. Height 12in (30cm). Flowers May-August.