Cobalt-N-Gold™ Hypericum (Hypericum kalmianum 'Cobalt-N-Gold™')

Native Shrub with Brilliant Yellow Flowers, Blue-Silver Foliage & Four Seasons of Interest

Plant Overview

Common Name: Cobalt-N-Gold™ Hypericum
Botanical Name:Hypericum kalmianum 'Cobalt-N-Gold™'
Plant Type: Deciduous Shrub
Family: Hypericaceae
Native Range: North America
Hardiness Zones: 4–7

Cobalt-N-Gold™ Hypericum is a compact, easy-care native shrub prized for its striking blue-silver foliage and cheerful golden-yellow flowers. Blooming in late spring and early summer, this pollinator-friendly selection brings vibrant color and texture to the landscape while requiring very little maintenance.

Its naturally rounded habit, drought tolerance, and multi-season interest make it an outstanding choice for modern gardens, foundation plantings, pollinator habitats, and low-maintenance landscapes.

Quick Facts

• Height: 2–3 feet

• Spread: 4–5 feet

• Bloom Time: Late Spring to Early Summer

• Flower Color: Bright Yellow

• Foliage Color: Blue-Silver

• Fall Color: Orange, Red, and Gold

• Sun Exposure: Full Sun to Part Shade

• Water Needs: Low to Medium

• Maintenance: Low

• Growth Habit: Mounded, Rounded

• Growth Rate: Moderate

• Drought Tolerant: Yes

• Deer Resistant: Yes

Growing Conditions

Light

Cobalt-N-Gold™ performs best in:

• Full Sun

• Partial Shade

The best flowering and foliage color occur when planted in full sun.

Soil

Adaptable to many soil conditions including:

• Sandy soils

• Clay soils

• Rocky soils

• Average garden soils

• Well-drained soils

This shrub performs best in locations with good drainage.

Water

Once established, Cobalt-N-Gold™ is highly adaptable.

• Average moisture during establishment

• Drought tolerant once mature

• Salt tolerant

• Suitable for challenging sites

Flower Characteristics

The flowers are one of the shrub's most attractive features.

Flower Features

• Bright golden-yellow petals

• Five-petaled flowers

• Prominent golden stamens

• Approximately ¾ inch across

• Produced in abundance

The vibrant blooms create a striking contrast against the cool-toned blue foliage.

Foliage Characteristics

Unlike many flowering shrubs, Cobalt-N-Gold™ offers exceptional foliage interest throughout the growing season.

Foliage Features

• Blue-silver leaves

• Fine texture

• Dense branching habit

• Attractive mounded form

Fall Interest

As temperatures cool, foliage transforms into:

• Fiery orange

• Deep red

• Golden yellow

Winter reveals attractive exfoliating bark for additional seasonal appeal.

Pollinator & Wildlife Value

Cobalt-N-Gold™ is an excellent wildlife-friendly shrub.

Attracts

• Bees

• Butterflies

• Native pollinators

Wildlife Benefits

• Berries provide food for birds

• Supports beneficial insects

• Enhances pollinator gardens

• Provides habitat value throughout the year

Garden Uses

This versatile shrub works beautifully in a variety of landscape settings.

Recommended Uses

• Foundation Plantings

• Shrub Borders

• Pollinator Gardens

• Native Plant Gardens

• Low Hedges

• Mass Plantings

• Slopes and Banks

• Cottage Gardens

• Rain-Friendly Landscapes

• Wildlife Gardens

Its compact size makes it ideal for smaller residential gardens while still providing strong visual impact.

Companion Plants

At 19 Birch Lane, Cobalt-N-Gold™ pairs beautifully with:

• Russian Sage

• Catmint

• Coneflowers

• Black-Eyed Susans

• Ornamental Grasses

• Lavender

• Sedum

• Blue Flax

• Daylilies

The blue foliage creates a stunning contrast against warm flower colors.

Care & Maintenance

Cobalt-N-Gold™ is exceptionally easy to grow.

Maintenance Tips

• Prune lightly in early spring

• Remove damaged branches as needed

• Apply compost annually

• Water during extended drought while establishing

Little intervention is required once plants are established.

Why We Grow It at 19 Birch Lane

At 19 Birch Lane, Cobalt-N-Gold™ Hypericum is valued for its four-season beauty, pollinator appeal, and outstanding durability. Few shrubs offer the combination of silver-blue foliage, brilliant yellow flowers, colorful fall foliage, and attractive winter bark in such a compact package.

Its adaptability and ecological value make it an ideal plant for both formal gardens and naturalistic landscapes.

Problems

Cobalt-N-Gold™ is generally problem-free.

Potential Issues

• Root rot in poorly drained soils

• Occasional leaf spotting in humid conditions

Overall, this shrub is considered highly disease resistant and reliable.

Plant Finder Details

Botanical Name:Hypericum kalmianum 'Cobalt-N-Gold™'
Common Name: Cobalt-N-Gold™ Hypericum
Plant Type: Deciduous Shrub
Family: Hypericaceae
Zones: 4–7
Height: 2–3 feet
Spread: 4–5 feet
Bloom Time: Late Spring to Early Summer
Flower Color: Yellow
Foliage Color: Blue-Silver
Fall Color: Orange, Red, Gold
Sun Exposure: Full Sun to Partial Shade
Water Requirements: Low to Medium
Maintenance: Low
Growth Habit: Mounded
Pollinator Friendly: Yes
Drought Tolerant: Yes
Deer Resistant: Yes

Cobalt-N-Gold™ Hypericum (Hypericum kalmianum 'Cobalt-N-Gold™')

Native Shrub with Brilliant Yellow Flowers, Blue-Silver Foliage & Four Seasons of Interest