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Hardy perennial
Boraginaceae
Perennials
Brunnera 'Jack of Diamonds'
Brunnera
'Jack of Diamonds' Caucasian Forget-me-not: 40 cm high and 80 cm spread, partial to full shade. Blue flowers in April-May. Zone 3; choose soil compatible with its moisture needs.
- Exposure
- Partial shade to full shade
- Life cycle
- Hardy perennial
- Hardiness
- Zone 3
Discover the plant
Common nameBrunnera 'Jack of Diamonds'
FamilyBoraginaceae
GenusBrunnera
CultivarValet de carreau
TypeHardy perennial
Botanical nameBrunnera
Brunnera 'Jack of Diamonds', known in the garden as Siberian Bugloss 'Jack of Diamonds', combines blue-toned flowers with a size that is easy to place in a composition. Its foliage features shades of silver and green, and should be highlighted among different textures. The usual flowering period is April-May. The clump reaches about 40 cm in height and 80 cm in spread; use these dimensions to place the plant in a semi-shaded bed or woodland garden.
The success of Siberian Bugloss 'Jack of Diamonds' begins with its location: partial to full shade, in suitable soil (kept moist, Clayey). For Siberian Bugloss 'Jack of Diamonds', regularly check the soil around the root ball: it must remain cool. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (partial to full shade) does not eliminate water needs. A margin corresponding to its 80 cm spread avoids having to move the clump in the first few seasons. The indicated hardiness level is zone 3, to be assessed according to your garden's conditions.
When planting Siberian Bugloss 'Jack of Diamonds', maintain moisture around the base and remove damaged leaves to highlight new growth. Siberian bugloss leaves can suffer from scorching sun and root competition from large trees. For associations, consider hostas, tiarella, and lungwort varieties with similar needs. By composing around its volume of 40 cm by 80 cm, you will preserve the visibility of its blooms (April-May) and circulation between plants.
Planting guide
From planting to establishment.
Spacing / density
31.5 in
Best planting time
Spring after the thaw or early autumn, allowing the roots time to establish before the severe cold.
Propagation
Division of clumps. Sowing does not guarantee the fidelity of a named cultivar.
Growing method
Brunnera macrophylla 'Jack of Diamonds': In spring after the thaw, or early autumn, allowing time for the roots to establish before the severe cold. For Brunnera macrophylla 'Jack of Diamonds', regularly check the soil around the root ball: it should remain moist. Water at the base when the surface begins to dry and adjust the amount of water based on rainfall; this exposure (partial shade to full shade) does not eliminate the need for water. The leaves of Brunnera macrophylla can suffer from scorching sun and root competition from large trees.
Soil and care
The right care,at the right time.
Soil pH
Acid to neutral to alkaline; general indication of the botanical group
Care level
Regular maintenance
Watering
For Caucasian forget-me-not 'Jack of Diamonds', regularly check the soil around the root ball: it must remain moist. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (partial shade to shade) does not eliminate the need for water.
Soil type
Kept moist, Clayey
Fertilization
Fertilizer for flowering
Moisture
Regular coolness during growth
Seasonal care
Brunnera ‘Jack of Diamonds’: keep the soil around the base moist and remove damaged leaves to show off new growth. During its flowering period (April-May), also keep an eye out for damaged stems and neighboring plants that might overshadow the clump.
Container growing
A garden,within reach.
Recommended pot size
Stable and perforated container, noticeably wider than the root ball; dimensions to be adapted to the sold format and adult development.
To try Caucasian Forget-Me-Not 'Jack of Diamonds' in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (80 cm). The substrate must remain moist; it will dry out more quickly than in the ground. Plan to protect the container in winter depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
16 inches (40.5 cm)
Width / spread
32 inches (81.5 cm)
Flower color
Blue
Foliage color
Green
Growth rate
Moderate
Growth habit
In rosette
Fragrance
Not documented for this selection
Bloom period
April-May
Garden associations
In goodcompany.
Companion plants
Associations to consider for Caucasian Forget-Me-Not 'Jack of Diamonds': hostas, foamflowers, lungworts. Choose varieties that tolerate partial to full shade and comparable humidity; allow each clump its adult space.
Plants to avoid
Around Caucasian forget-me-not 'Jack of Diamonds,' avoid neighbors that would cover its leaves or strongly compete with its root ball. Compatibility in terms of light, water, and spread takes precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant Caucasian Forget-me-not 'Jack of Diamonds'?
Expect partial to full shade and suitable soil (kept moist, clayey). The leaves of the Siberian bugloss can suffer from scorching sun and root competition from large trees.
What is the best location for Caucasian Forget-Me-Not 'Jack of Diamonds'?
Expect approximately 40 cm in height and 80 cm in width at maturity. Approximately 80 cm between centers, to be adjusted according to the actual development of the clump. This size is suitable for use in semi-shaded beds and woodland gardens.
When does Caucasian forget-me-not ‘Jack of Diamonds’ bloom?
The indicated period is April-May. The flower color is blue. The exact date and duration depend on the climate, the season, and the plant's establishment.
How to water and care for Caucasian Forget-me-not 'Jack of Diamonds'?
For Caucasian Forget-me-not 'Jack of Diamonds', regularly check the soil around the root ball: it must remain moist. Water at the base when the surface begins to dry out and adjust the amount of water according to rainfall; this exposure (partial shade to shade) does not eliminate the need for water. Keep the soil moist around the base and remove damaged leaves to highlight new growth.
Can Caucasian forget-me-not 'Jack of Diamonds' be grown in pots?
To try Caucasian Forget-Me-Not 'Jack of Diamonds' in a container, choose a stable, perforated pot suitable for the root ball and its future size (80 cm). The substrate should remain moist; it will dry out faster than in the ground. Plan to protect the container in winter depending on your climate.
Wildlife and pets
Life,around your plants.
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