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Large clusters of lightly fragrant lavender-blue flowers are produced in early spring and are held well above the deep dark green foliage. Blue Moon Phlox was selected for its clusters of large full flowers and vigor. This is an excellent choice for lightly shaded gardens or as a groundcover under deciduous trees. Provide shade during the hottest portion of the day in hot summer climates and well-drained soil rich in organic matter. Easy and reliable once established. The flowers provide early spring nectar to butterflies and other pollinators. Blue Moon Phlox along with the straight species Phlox divaricata tied for the Top Performer in Mt. Cuba Center Phlox for Shade trials. Item# 11217

2022 Missouri Botanic Garden Plants of Merit selection! One of the most amazingly blue colored flowers in the plant world! This small growing but vigorous annual or tender perennial vine produces loads of brilliant deep blue flowers with recurving and overlapping petals with a white to creamy yellow throat. It can be successfully overwintered but it's easier just to save a few seeds to plant in spring. Caterpillar host: Longtail Skipper. Item# 9114

Blue dye can be extracted from the blossoms!!

Blue, indigo, to purple 1/4" wide flowers adorn the long spike-like flowering stems from spring to frost and are held above the rich green glossy foliage. Blue Porterweed, Stachytarpheta cayennensis, is an intermediate growing Porterweed and has a fairly dense upright to spreading habit. An excellent choice for butterfly gardens or as a container plant. Also known as Blue Snakeweed, Verbena Azul, Cayenne Snakeweed. For the Florida native Blue Porterweed see Stachytarpheta jamaicensis. Item# 13080

Light blue to blue-purple 1/4" wide nectar-rich flowers adorn the tall narrow indeterminate flower spikes from spring to frost to year round under warm tropical conditions. Native to Florida and much of the tropical Americas, Blue Porterweed, Stachytarpheta jamaicensis, has smoother lighter green foliage and generally grows wider than tall whereas the other Blue Porterweed, Stachytarpheta cayennensis or S. urticifolia, has more rugose or quilted deeper green glossier foliage with a typically upright habit. Porterweeds are excellent pollinator plants where they attract a continuous menagerie of aerial acrobats from spring until frost. This a heat and sunloving tropical to tender perennial that can be added to gardens and landscapes or plant them in containers to draw the pollinators in for upclose viewing. Blue Porterweed is also a caterpillar host plant for the Tropical Buckeye butterfly. Item# 12046

Clusters and chains of large 3" wide purple-blue trumpet shaped flowers with contrasting yellow throats are produced throughout much of the growing season and attract larger bees and butterflies as well as the occassional hummingbird. The Blue Sky Vine, Thunbergia grandiflora, is an exceptionally popular tropical vine that is easy, reliable, has excellent flower power and it can be grown as a die-back perennial in zones 8-9 if established early in the growing season (click the "More Details and Growing Info" link or the plant's image to learn more). It may remain evergreen in warm frost free tropical climates where it can flower nearly yearround. The Blue Sky Vine is a heat and sunloving twining vine suitable for metal fences, smaller arbors, and medium to large trellises or other sturdy supports. Provide a well-drained, moderately fertile soil. The Blue Sky Vine can also be enjoyed as an easy and low-maintenance container plant. Item# 1108.

Pale blue frilly 1 to 1-1/2" wide daisies with a nicely contrasting yellow center are produced beginning in late spring and through summer often continuing into fall atop a neat mound of deep green foliage. The Blue Star Japanese Aster is a tidy under-used clump-forming perennial selected for its exceptionally long flowering season that is sure to add delightful color to the garden and landscape but it also makes easy and exceptionally long-flower container specimens. The flowers are sure to attract a multitude of pollinators. Provide a full to mostly sunny site with a well-drained soil for optimum vigor and flowering. Heat, sun, and humidity tolerant. Images courtesy of North Creek Nurseries, all rights reserved. Item# 11682

Deep purplish blue Iris-like flowers are produced on 2' high spikes are held above the upright to arching dark-green, textured sword shaped foliage. Blue Stars often begins flowering in spring and continues into summer. The overall appearance of this hardy rhizomatous African native is like an overgrown Blue-Eyed Grass. Blue Stars is a naturally evergreen clump forming perennial but the foliage my die back at temperatures below 20oF. Provide good drainage in an average moist rich soil with shade during the hottest portions of the day in hot summer climates. Makes an easy container plant where not hardy. Item# 11019

Dense broadly conical 3-4" high spikes of intense sapphire blue tubular flowers open from the bottom upwards with the first flowers to open creating the broad brim of the witches hat. Blue Witches Hat, or Hedgehog Sage, begins flowering in autumn and in areas where it is protected from frosts it can flower throughout winter and into spring. It is a medium to short day flowering plant. This tropical South African member of the mint family can develop into a shrub where winters are freeze and frost free reaching up to 8' high, 3-4' high in a container is more typical. Item# 11750