Sanguisorba ‘Cangshan Cranberry’ is a distinctive and visually appealing perennial, increasingly popular in diverse garden settings for its unique flower spikes and attractive foliage. It offers a striking presence that enhances garden aesthetics.
Unique Characteristics of Sanguisorba Cangshan Cranberry
Sanguisorba ‘Cangshan Cranberry’ is a clump-forming, herbaceous perennial, growing 1.5 to 2.5 meters (5 to 8 feet) tall and spreading 0.1 to 0.5 meters (0.3 to 1.6 feet) within 2 to 5 years. Its foliage features pinnate leaves, divided into lance-shaped, coarsely-toothed, dark green leaflets, forming an attractive mound from which tall, slender stems emerge.
Its deep maroon to purplish-red flowers are cylindrical spikes, resembling cranberries. These unscented flowers, typically small, 1-10 mm in diameter, bloom on branching stems from late summer into autumn (July through November). Spent flower heads provide visual interest into winter. This perennial is hardy in USDA Hardiness Zones 4 through 8.
Ideal Planting and Growing Conditions
Sanguisorba ‘Cangshan Cranberry’ thrives in full sun to partial shade. It prefers moderately fertile, consistently moist, well-drained soil. The plant adapts to various soil types, including chalky, clay, loamy, and sandy, and tolerates a wide pH range from acidic to alkaline.
When planting, incorporate compost to improve drainage and fertility. Space plants 30-45 cm (12-18 inches) apart. During establishment, regular watering is important to encourage deep root growth and ensure reliable soil moisture.
Ongoing Care and Maintenance
Once established, ‘Cangshan Cranberry’ benefits from consistent moisture, especially during dry spells. Organic mulch, like well-rotted compost, helps retain soil moisture and suppress weeds. While not strictly necessary, a balanced, slow-release fertilizer in spring can support vigorous growth.
Pruning is minimal; cut back previous year’s growth to 5-7 cm (2-3 inches) above ground in late winter or early spring to promote new growth. Deadheading spent flowers is optional; leaving seed heads provides winter interest. This plant is resistant to most common pests and diseases. Divide congested clumps every 3-4 years to maintain vigor.
Integrating Sanguisorba Cangshan Cranberry into Your Landscape
Sanguisorba ‘Cangshan Cranberry’ integrates well into cottage gardens, naturalistic plantings, and borders. Its tall, slender stems and unique flower spikes create a “see-through” effect, adding vertical interest without obstructing views, making it an excellent choice for the middle or back of a border.
Its deep burgundy to purplish-red flowers contrast beautifully with ornamental grasses and other perennials. Companion plants like Miscanthus sinensis ‘Flamingo’, Eupatorium maculatum, or Veronicastrum virginicum ‘Fascination’ complement its form and color. ‘Cangshan Cranberry’ also serves as an excellent cut flower.