Dianthus amurensis 'Siberian Blue' is a short-lived perennial carnation native to the Amur River region of Siberia, prized for its reddish-violet fragrant flowers and compact habit. Growing 9-12 inches tall and wide, this hardy variety thrives in zones 5-8 and blooms from June through July, with extended flowering possible into fall. Low-maintenance and deer-resistant, it transitions seamlessly between annual and perennial roles depending on your climate, and cuts beautifully for arrangements.
Full Sun
Moderate
5-8
12in H x 12in W
—
High
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The reddish-violet flowers of 'Siberian Blue' deliver genuine fragrance in a compact, densely-mounding form that slots naturally into rock gardens, borders, and containers. Unlike taller carnation hybrids, this Amur pink holds its own in cool-climate gardens without the heat-sensitivity plaguing deeper-South growers. Deadheading extends the bloom season considerably, rewarding even minimal effort with months of continuous color.
This carnation excels as a cut flower, producing long-lasting arrangements with excellent vase life. In the garden, it functions as an edging plant, container specimen, or alpine trough dweller, where its fragrance can be easily enjoyed. Its deer resistance makes it reliable in landscapes where browsing pressure eliminates more vulnerable flowers.
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Start seed indoors 6-8 weeks before your last spring frost date. Sow seeds on the soil surface or press them lightly into moist seed-starting mix; they need light to germinate. Keep soil evenly moist and provide bright, warm conditions until seedlings emerge.
Harden off seedlings over 7-10 days by gradually exposing them to outdoor conditions. Transplant 1-2 weeks before your last spring frost date into prepared garden beds or containers with well-draining soil enriched with organic matter. Space plants 9-12 inches apart.
Cut flowers when they are fully open or just beginning to open, in early morning when stems are most hydrated. Cut stems at an angle above a leaf node, and condition by placing in cool water immediately. Flowers last 2-3 weeks in a vase with regular water changes.
Deadhead spent flowers regularly throughout the blooming season to encourage additional flower production. Remove any diseased or damaged foliage promptly. In spring, you can lightly shear back leggy growth to promote a more compact, bushy form.
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“Dianthus amurensis hails from eastern Siberia, where it evolved as a cold-hardy short-lived perennial adapted to rigorous continental conditions. The 'Siberian Blue' cultivar represents a deliberate selection from this species, capitalizing on its superior hardiness and more compact growth compared to its Chinese pink cousins. This variety emerged from commercial breeding programs seeking garden-worthy carnations that could withstand cooler climates without the glass-house vulnerabilities affecting hybrid florist carnations.”