Jack of Diamonds is like a giant version of the classic silver brunnera, with huge heart-shaped leaves 9 to 10 inches across. The leaves overlap at the base in a swirl reminiscent of a snail shell, forming a nearly circular mound.
Each leaf carries a heavy silver overlay with wide, dark green veins. In mid to late spring, clusters of baby blue, forget-me-not-like flowers rise above the foliage. It grows about 15 inches tall and up to two and a half feet wide, lighting up shady beds.
What it looks like
Huge heart-shaped leaves 9 to 10 inches across with a heavy silver overlay and bold, wide dark green veins, overlapping at the base in a swirling, circular arrangement. In spring, airy sprays of tiny baby blue five-petaled flowers rise on stems up to about 30 inches. The foliage mound is circular, 14 to 16 inches tall and 28 to 32 inches wide. At peak bloom a cloud of blue flowers floats above the broad silver mound.
Growing it with lavender
Brunnera needs shade and evenly moist soil, so it belongs in a shade garden with hostas and ferns rather than in a sunny lavender bed.
Care
Plant in part to full shade in humus-rich soil that stays evenly moist; protect from hot afternoon sun, which can scorch the leaves. Hardy in USDA zones 3-8. Remove spent flower stems after bloom and trim tattered leaves as needed; it rarely needs dividing.
At a glance
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Botanical name: Brunnera macrophylla
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Flower color: Baby blue
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Foliage: Silver with dark green veins
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Growth habit: Broad, circular mound
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Mature size: 14–16 in tall × 28–32 in wide
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USDA hardiness zones: 3–8
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Light: part sun to part shade, full shade
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Bloom start: Early-May
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Peak bloom: Mid-May
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Bloom pattern: Single Flush
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Deer resistance: Resistant
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Pollinator value: Fair
Sizes and shipping
One full 72-cell plug tray: 72 young starter plugs of this variety (cells about 1⅓ in. wide × 2½ in. deep), rooted and ready to pot up into quarts or gallons. Best for growers and nurseries. Potted plants and plug trays ship during our live-plant seasons, March 1–May 31 and October 1–November 30; June through September is local pickup only. Plugs, potted plants and trays do not ship to AZ, CA, HI, ID, NV, OR, UT or WA.