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-prepared garden loam; full sun or light shade; also excellent for forcing indoors or growing in containersHardiness: USDA Zones 4 through 8In 1807, President Jefferson recorded planting one of the oval flower beds at Monticello with double hyacinths in... - Delft Blue Hyacinth (Hyacinthus orientalis cv.).
Jan Bos Hyacinth (Hyacinthus orientalis cv.). Early to mid-spring-flowering, hardy, pest-resistant bulbDescription: Large, single-flowered, highly-scented flowers in pinkish-red with a white blushHabit: Flower height of 8 to 12 inchesCulture: Plant bulbs 5 to 6 inches dee... - Jan Bos Hyacinth (Hyacinthus orientalis cv.).
Feathered Hyacinth (Muscari comosum 'Plumosum'). Hardy, late spring-flowering bulb Description: Feathery plumes of mineral-violet flowers resembling puffs of cotton candy Habit: 10 inches tall; tends to lean over Culture: Plant 3 to 4 inches deep in sun or partial shade and well-drained ga... - Feathered Hyacinth (Muscari comosum 'Plumosum').
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).
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 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 w... - Blue False Indigo (Baptisia australis).
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).