Large-flowered St. John's Wort is a semi-evergreen shrub that fills the garden with golden-yellow flowers from early summer through fall, creating a long season of color in a compact, mounded form. Hardy from zones 6 to 9, this Hypericum species grows 2 to 3 feet tall and spreads to 3 to 5 feet wide, making it substantial enough to anchor a border yet small enough for smaller landscapes. The distinctive blue-green foliage provides a cool, sophisticated backdrop for the showy, 2.5-inch flowers that emerge from June through September, followed by red berries that extend the display even further.
Partial Sun
Moderate
6-9
36in H x 60in W
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Moderate
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The flowers are genuinely showy, with five distinctive golden petals and prominent styles that catch the light beautifully. Blue-green leaves in a dense, arching mound create elegant structure even before the blooms arrive, and this shrub tolerates drought once established, making it low-maintenance for busy gardeners. It needs no pesticide interventions due to its natural resistance to insect and disease problems, a rare gift in the ornamental shrub world.
This shrub serves well as a hedge or screening plant, where its dense growth habit and long blooming season create a continuous living wall of color. Its combination of attractive foliage, prolific golden flowers, and red fruit makes it valuable in mixed borders and foundation plantings.
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Prune in late winter or early spring to remove any dead or damaged wood and to maintain the dense, rounded mound shape. Light pruning encourages fuller branching and more prolific flowering without compromising the plant's natural arching form.
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