Brunnera macrophylla Jack of Diamonds
Brunnera 'Jack of Diamonds' photo courtesy of Walters Gsrdens

Siberian Bugloss

'Jack of Diamonds' is a giant version of the classic 'Jack Frost' but with a twist. The huge leaves overlap dramatically at the base giving it a circular shape. The leaves have a heavy silver overlay with vivid wide, dark green veining pattern. From mid to late spring, baby blue, forget-me-not type blossoms are held in clusters above the foliage.

  • Height: 34-61 cm (14-16 in)
  • Spread: 71-81 cm (28-32 in)
  • Cold Hardiness: Zone 3-8
  • Sun or Shade: part to full shade
  • Bloom Time: mid to late spring
  • Leaf Colour: silver grey
  • Bloom Colour: blue
  • Critter Resistance: deer
  • Nature Attraction: bees

Growing and Maintenance Tips

Brunnera is an easy care undemanding perennial that thrives in rich well drained garden soil in partial shade. It is not a fan of hot dry conditions but will take morning or late afternoon sun as long as the soil stays evenly moist. It seldom needs dividing. To keep the plant looking attractive shear the spent flower heads after flowering.