Hypericum kalmianum Proven Winners© SUNNY BOULEVARD (PBR)

£46.99
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Add a burst of enduring colour to your garden with Hypericum Sunny Boulevard, a premium St. John’s Wort from the Proven Winners collection. This exceptionally hardy, mound-forming shrub is prized for its extended flowering window, producing a blanket of bright, star-shaped golden blooms from midsummer right through to autumn. Its narrow, willow-like foliage emerges in a sophisticated blue-green hue, providing a cool-toned backdrop that makes the yellow flowers pop. Reaching a tidy 60-90cm, Sunny Boulevard is naturally rust-resistant and handles sun-drenched, free-draining spots with ease. Whether used as a low-maintenance flowering hedge or a vibrant container specimen, this drought-tolerant beauty delivers high-impact results with minimal effort.

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Key Features

Plants by type
  • Shrubs
Flower Colour
  • Yellow
Eventual Height
  • 0.5-1m
Flowering Month
  • July
  • August
  • September
Planting Position
  • Full sun
  • Part shade
Features
  • semi-evergreen
  • Summer flowering

How to care for Hypericum kalmianum Proven Winners© SUNNY BOULEVARD (PBR)

Light:
Performs best in full sun but will tolerate light partial shade.

Soil:
Prefers well-drained soil and adapts well to sandy or lighter soils.

Water:
Water regularly while the plant establishes. Once mature it tolerates short dry periods.

Pruning:
Minimal pruning required. Lightly trim in early spring to maintain a compact shape.

Hardiness:
Very hardy and reliable in UK gardens.

Feeding:
Usually unnecessary; a spring mulch of compost is sufficient.

Notes

Deciduous ornamental shrub

Narrow blue-green foliage

Bright golden-yellow summer flowers

Compact, rounded growth habit

Suitable for borders, rock gardens, or low hedging

Drought tolerant once established

Attractive to pollinating insects

Mature size approx. 80–100 cm tall and wide

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