Overview
Brunnera macrophylla 'Jack Frost' is a perennial in the genus Brunnera, part of the Boraginaceae family. Brunnera macrophylla 'Jack Frost' grows best in partial shade and shade, and tolerates loamy and well-drained soils and neutral and slightly acidic pH. Its UK hardiness is rated H7. Suggested uses include groundcover, shade garden, woodland garden and borders. It is native to Caucasus.
About
Brunnera macrophylla, the Siberian bugloss, great forget-me-not, largeleaf brunnera or heartleaf, is a species of flowering plant in the family Boraginaceae, native to the Caucasus. It is a hardy, rhizomatous, herbaceous perennial, that can reach from 12 to 18 inches in height, and carries basal, simple cordate leaves on slender stems.
Wikipedia contributors, CC BY-SA 4.0 — Brunnera macrophylla
About the genus
Brunnera is a genus of flowering plants in the family Boraginaceae. They are rhizomatous perennials, native to the woodlands of Eastern Europe and North West Asia. They have hairy leaves and sprays of blue flowers in spring.
Wikipedia contributors, "Brunnera", CC BY-SA 4.0 — Brunnera
Growing conditions
Best soil and position for Brunnera
- Sunlight
- partial shade, shade
- Soil type
- loamy, well-drained
- Soil pH
- neutral, slightly acidic
- Soil moisture
- moist
- Aspect
- north, east
- Exposure
- sheltered
- UK hardiness
- H7
Plant details
Brunnera macrophylla 'Jack Frost' size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- groundcover, shade garden, woodland garden, borders
- Native to
- Caucasus
Care notes
Pruning and caring for Brunnera macrophylla 'Jack Frost'
- Cultivation
- Prefers moist, humus-rich soil in partial to full shade. Avoid direct hot sun to prevent leaf scorch. Mulch to retain moisture.
- Pruning
- Remove dead or damaged leaves in spring. Cut back after flowering to maintain tidy appearance.
- Propagation
- Division in spring or autumn; seed propagation less common.
Frequently asked questions
How do I grow Brunnera macrophylla 'Jack Frost'?
Prefers moist, humus-rich soil in partial to full shade. Avoid direct hot sun to prevent leaf scorch. Mulch to retain moisture.
Where is the best place to plant Brunnera macrophylla 'Jack Frost'?
Brunnera macrophylla 'Jack Frost' prefers partial shade and shade. It suits sheltered positions.
What soil does Brunnera macrophylla 'Jack Frost' need?
Brunnera macrophylla 'Jack Frost' grows best in loamy and well-drained soil. It prefers neutral and slightly acidic soil. Aim for soil that stays moist.
How do I prune Brunnera macrophylla 'Jack Frost'?
Remove dead or damaged leaves in spring. Cut back after flowering to maintain tidy appearance.
Is Brunnera macrophylla 'Jack Frost' hardy in the UK?
Brunnera macrophylla 'Jack Frost' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Brunnera macrophylla 'Jack Frost'?
Division in spring or autumn; seed propagation less common.
More in the Brunnera genus
- Brunnera 'Hadspen Cream'Hadspen Cream Siberian Bugloss
- Brunnera 'Variegata'Variegated Siberian Bugloss
- Brunnera mac. 'Betty Bowring'Siberian Bugloss
- Brunnera mac. 'Jack Frost'Siberian Bugloss
- Brunnera mac. 'Sea Heart'Siberian Bugloss
- Brunnera 'Langtrees'Siberian Bugloss