Adriatic Bellflower is a low-growing, mat-forming perennial that brings delicate star-like blue flowers to rock gardens and groundcover plantings from May through June. This cultivar of Campanula garganica, discovered at the base of Italy's Mt. Gargano in 1827, spreads gracefully across well-drained soil while staying just 3 to 6 inches tall and reaching 6 to 18 inches wide. Hardy in zones 5 through 7, it thrives in full sun to partial shade and asks for only moderate water and minimal maintenance, making it an effortless addition to any garden.
Partial Sun
Moderate
5-7
6in H x 18in W
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High
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The star-shaped flowers, each measuring half to one inch across, cluster loosely along the stems in late spring, creating a delicate, airy display that feels both refined and naturally wild. Deer leave it completely untouched, so it persists where other perennials struggle. What truly sets this variety apart is its aggressive spreading habit in optimal conditions, which means you get generous groundcover quickly, though regular division keeps it from overtaking its neighbors.
Adriatic Bellflower shines as a groundcover that softens edges and fills gaps between stepping stones and in rock gardens. Its spreading, mat-forming habit and low profile make it ideal for naturalizing in areas where you want color without height, and its deer resistance means it persists in mixed borders where other delicate perennials might not survive.
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Regular division helps control its aggressive spreading habit and rejuvenates older clumps. Divide in spring or early fall, breaking apart the mat-forming stems and replanting divisions 6 to 18 inches apart to allow room for lateral spread.
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“Campanula garganica arrived in cultivation after its discovery at the base of Mt. Gargano in the Adriatic region of southern Italy in 1827, a moment that earned it the common name Gargano bellflower. The species was once classified as a variety of C. elatines before botanists recognized it as distinct enough to stand alone. The 'Dickson's Gold' cultivar carries on this European heritage while adding its own identity to gardens across temperate zones.”