Hardiness Zone: 4a-9b
Evergreen/Deciduous: Herbaceous Perennial
Height: 2 ft
Spread: 2 ft
Sun Exposure: Full Sun to Full Shade
Foliage: Blue Green
Flower: Dark Blue
Water Usage: Moderate

Zwanenburg Blue Spiderwort forms lush clumps of blue green grass like foliage with beautiful dark blue flowers that open almost continuously from June to September. A desirable and difficult to find plant, it is useful in containers, borders and mass plantings and is tolerant of sun or shade. A cold hardy perennial, it can be trimmed in spring to encourage new growth. Propagate by division when clumps become overcrowded. Tolerant of boggy soils.