If you want months of bright, sunny color with very little fuss, Hypericum patulum 'Hidcote' is a classic choice. Often sold as St. John's wort 'Hidcote', this compact shrub is valued for its large, waxy, golden-yellow flowers with a prominent tuft of stamens. It typically blooms from early summer into early fall, giving you a long season of dependable color and a tidy, rounded look in the landscape.
In the garden, you can use it as a low informal hedge, in mixed shrub borders, or in mass plantings where its flowers read clearly from a distance. Expect a mature size of roughly 24-48 inches tall with a similar spread, depending on climate and pruning. It performs well in USDA hardiness zones 5-8. In colder winters it may die back, then regrow and flower on new wood as the season warms.
For best results, plant in full sun to part shade in average, well-drained soil. Once established, it tolerates dry conditions, but it will look and flower best with occasional deep watering during extended drought. Prune in early spring to shape the plant and encourage fresh growth and a strong flower display. Avoid poorly drained sites to reduce stress and keep the plant thriving year after year.