Blue False Indigo (Baptisia australis). Herbaceous, spring-flowering perennial Description: Deep indigo blue, pea-like flowers in clusters above shrubby plants with bright blue-green foliage Habit: Grows 3 to 4' feet high Culture: Prefers part shade to full sun and moist but well-drained, moderately rich soil Hardiness: Cold hardy to USDA Zone 3 Origin: North America Attributes: Drought tolerant, Attracts butterflies The native Blue False Indigo, introduced to Britain by 1724, was grown in early American... - Blue False Indigo (Baptisia australis).
False Solomon's Seal (Maianthemum racemosum). Hardy, herbaceous, North American wildflowerDescription: Tiny, fragrant, creamy white flowers at the ends of the stems in showy, terminal, spirea-like racemes in spring, followed by greenish, fleshy ber... - False Solomon's Seal (Maianthemum racemosum).
Blue Star (Amsonia tabernaemontana). Hardy, late-spring flowering perennialDescription: Clusters of pale blue flowers borne on 3-foot stems; dark green, peach-leaf foliage turns yellow in the fallHabit: Grows up to 3 ft high and wide, vase-shaped Culture: Prefers full ... - Blue Star (Amsonia tabernaemontana).
Delft Blue Hyacinth (Hyacinthus orientalis cv.). Early to mid-spring-flowering, hardy, pest-resistant bulbDescription: Large, single-flowered, highly-scented flowers in soft lilac-blueHabit: Flower height 8 to 12 inchesCulture: Plant bulbs 5 to 6 inches deep in well-prepare... - Delft Blue Hyacinth (Hyacinthus orientalis cv.).
Harlequin Blue Flag (Iris versicolor). Hardy, North American, spring-blooming perennialDescription: Showy, bluish-purple, wide-spreading flowers in branched clusters of two or three; falls are often blotched in yellow or purple-veinedHabit: Forms vigorous clumps of... - Harlequin Blue Flag (Iris versicolor).
Blue Mist Flower (Conoclinium coelestinum). Late summer flowering, North American perennial Description: Deep blue, mist-like flowers in late summer and autumn; attractive burgundy stems Habit: Plants grow to 3 feet high and 4-5 feet wide; spreads by underground runners Culture: Pr... - Blue Mist Flower (Conoclinium coelestinum).
Wild Blue Phlox (Phlox divaricata). Hardy, spring-flowering perennial Description: Bears open clusters of lavender blue to pale violet and white flowers, semi-evergreen foliage Habit: Spreading, low-growing to 14-inches high and 20-inches wide Culture: Prefers partia... - Wild Blue Phlox (Phlox divaricata).