USDA: 4-7
Origin: Romania
Growth Habits: Perennial, blue spikes up to 2 feet tall (60 cm), 2 feet spread (60 cm)
Watering Needs: Moist sandy soil with good drainage
Propagation: Seeds
The spelling adopted for transsilvanica is the one from the Kew Index. This plant is often seen as "transylvanica" or "transsylvanica".
Blooming Habits:
Lavender blue flowers in summer. Deadhead spent flowers to lengthen blooming period. Cut back when the plant has finished blooming.
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