Odessa Bellflower is a robust perennial campanula that brings violet-blue clustered blooms to cool-climate gardens from May through July. Native to Europe and temperate Asia, this variety grows 24 to 36 inches tall and wide, thriving in hardiness zones 3 through 8 with minimal fussing. Its upright habit and showy, bell-shaped flowers that face upward in dense spherical clusters make it a natural choice for naturalizing, while its deer resistance means you can plant it with confidence that hungry visitors will leave it alone.
Partial Sun
Moderate
3-8
36in H x 36in W
—
High
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This clustered bellflower produces distinctive spherical flower clusters packed with violet to lavender-blue blooms that seem to glow above the foliage. What sets it apart is its willingness to spread via rhizomes and naturalize in moist soils, turning a planted patch into an increasingly lush display year after year. Low maintenance and unfussy about care, it asks only for average soil and regular moisture, rewarding you with weeks of color without deadheading demands.
Odessa Bellflower shines in naturalized plantings where it can spread and establish drifts of color across a garden. Its clustered flower form and upright growth make it valuable in mixed perennial borders and meadow gardens, where it weaves cohesively with neighboring plants.
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Promptly deadhead spent flower stems to encourage continuous blooming throughout the season. Divide clumps every 3 to 5 years in fall to maintain vigor and prevent the rhizomatous spread from overwhelming neighboring plants.
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