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Browallia earns its nicknames of amethyst flower and sapphire flower for the richness of its small blue flowers, which pop out like jewels against the bright green of its foliage. A tidy mounding plant, it's great in containers or planted as edging in a neat row at the front of the border.
Plant in a shady spot in spring after all danger of frost has passed. It likes rich soil high in organic matter, so add some compost at planting time. Keep well watered and mulch to keep soil cool and moist. It may not flower in areas where summers are very cool. It may overwinter in the warmest regions (Zones 10-11), especially if covered with loose autumn leaves, straw, or any other light, airy winter mulch.