Kalm's St. John's Wort 'Cobalt-N-Gold'

Hypericum kalmianum ‘Cobalt-N-Gold’ is a compact and extremely decorative ornamental shrub, prized for the striking contrast between its bluish foliage and abundant bright yellow blooms. This selection stands out with its narrow, steel-blue leaves with cobalt reflections, which beautifully highlight the numerous star-shaped golden-yellow flowers with prominent stamens appearing in summer. Its overall habit is rounded, dense, and naturally well-branched, with a silhouette that is wider than it is tall, ideal for sunny borders, foreground plantings, and group plantings. The deciduous to semi-evergreen foliage, depending on the climate, provides a fine and modern texture throughout the season. Very hardy, drought-tolerant once established, and low-maintenance, ‘Cobalt-N-Gold’ is particularly well-suited for northern gardens, sustainable landscaping, and exposed sites where reliability is essential.