Brunnera macrophylla 'Jack of Diamonds' (Siberian Bugloss 'Jack of Diamonds') is a shade-garden standout that gives you oversized, heart-shaped leaves with a bright, silvery sheen and crisp green veining. In spring, airy stems carry clusters of tiny blue, forget-me-not-like flowers that float above the foliage, adding a soft burst of color without taking away from the dramatic leaves.
Plant it where you want bold texture in part shade to full shade, especially in spots that stay evenly moist. A rich, well-drained soil with plenty of organic matter helps it look its best through the growing season. Water regularly during establishment, then keep the soil from drying out completely for the fullest foliage. A light mulch can help conserve moisture and keep roots cool.
At maturity, expect a compact clump about 14-16 inches tall, with a broad presence that works well at the front of a shady border, along paths, or under open-canopied trees. Pair it with ferns, hostas, heucheras, pulmonaria, and spring bulbs for layered interest from early spring into fall. Remove tired leaves if they get weathered later in the season, and enjoy fresh growth that keeps the plant looking neat.