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Blue Flowers or Flower Parts

Find plants with blue flowers or flower parts. An easy way to color coordinate for your garden, containers, and landscapes.

 

STARSHIP™ Blue Lobelia

Lobelia x speciosa 'PAS1302712' (L. x speciosa 'STARSHIP™ Blue') PPAF

Spikes of intense deep violet-blue flowers are produced from late spring or early summer and into fall on this repeat flowering hybrid native perennial.  STARSHIP™ Blue Lobelia was selected not only for its dark flowers but is also touted for its ability to repeat flower throughout the growing season. The nectar rich flowers attract hummingbirds, bees, and butterflies. These Lobelias prefer consistently moist, moderately fertile, well-drained soils and sunny conditions. STARSHIP™ Blue Lobelia can be enjoyed as a container plant as well as in the garden or landscape. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12258

Grows To: 18-24"H x 12-24"W
Outdoor Light: Full sun (consistently moist soils), Morning sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$12.99
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Starstruck Bluestar

Amsonia 'Starstruck'

Rounded clusters of star-shaped sky blue flowers adorn the ends of sturdy stems in spring. Starstruck Bluestar or Amsonia develops into a neat rounded mound of deep green foliage to about 20" high once flowering is complete. This is an easy and reliable clump forming perennial that is tolerant of wet, moist, to average moist sites and that will only get better with age. Bluestars are pest, disease, and deer resistant perennials that are considered to be somewhat drought resistant once well-established. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12110

Grows To: 18-24"H x 24-36"W
Outdoor Light: Full sun, Mostly sunny, Part shade

Stevie's Wonder Lily of the Nile, Agapanthus (Blue-Purple, Cold Hardy)

Agapanthus praecox subsp. orientalis 'Stevie's Wonder'

Huge round clusters composed of extra large bell-shaped deep violet-blue flowers held on sturdy stems atop the narrow strap-like medium green foliage in late spring to early summer and potentially into fall on well-established clumps. Stevie's Wonder Lily of the Nile or Agapanthus is a vigorous, clump-forming perennial with a tropical look but this cultivar has proven to have excellent hardiness into zone 7. The flowering spikes are typically 2-3' high in areas that experience hardy winter freezes (zone 7-8) but they are reported to reach up to 6' high in zone 9 with reports that the flower clusters can reach near volleyball size! The flowers of Agapanthus attract bees, butterflies, and hummingbirds. Provide Stevie's Wonder Lily of the Nile a full to partly sunny site in a well-drained, average moist, fertile soil for optimum vigor and flowering. Makes an easy and low-maintenance container plant where not hardy. May be fully winter deciduous. Image credited to Emerisa Gardens via AG3, Inc., all rights reserved. Item# 12467

Grows To: 2-3'H x 2-3'W space about 12'' or more apart, taller where winters are mild
Outdoor Light: Full sun, Mostly sunny, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$12.99
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Storm Cloud Lily of the Nile, Agapanthus (Dark Purple, Cold Hardy)

Agapanthus praecox subsp. orientalis 'Storm Cloud'

6" wide rounded clusters of 1" wide deep blue-purple to dark purple trumpet shaped flowers are produced atop sturdy 3' high stalks in summer that attract bees, butterflies, and hummingbirds. Though recent competition has increased when it comes to reliably cold hardy Agapanthus cultivars, Storm Cloud is still considered to be one of the most reliable, naturally winter dormant cultivars but it will benefit from a breathable mulch in any area that experiences freezing temperatures for extended periods. Somewhat drought resistant once well-established but generally prefers an average moist, fertile, well-drained soil in a full to mostly sunny site. Deer and rabbit resistant and moderately salt tolerant. Makes an easy and low maintenance container plant where not hardy. Item# 1144

Grows To: 2-3'H x 2-3'W space about 12'' or more apart
Outdoor Light: Full sun, Mostly sunny, Part shade

String Theory Blue Star

Amsonia 'String Theory' PPAF, CPBRAF

Dense rounded clusters of starry periwinkle blue flowers are produced in late spring to early summer atop the fine-textured deep green foliage that transforms to a deep golden yellow in fall. String Theory Blue Star, a hybrid of or selection of Amsonia hubrichtii, has all of the wonderful traits of Arkansas Blue Star but with a more refined compact habit. This is a clump-forming, long-lived, herbaceous native perennial with an almost formal habit at maturity reaching about 18-24"H x 30-36"W. It can be utilized as an informal hedge or backdrop and will look great paired with native grasses in fall. This Proven Winners© selection is tough and easy, low-maintenance, sunloving, heat tolerant, and deer and rabbit resistant. The flowers of the Blue Stars attract larger bees, butterflies, hummingbirds, and hummingbird moths. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12891

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Grows To: 18-24"H x 24-36"W space at about 18-24" apart for a hedge or grouping
Outdoor Light: Full sun, Mostly sunny, Part shade
PW Quart Pot / 30 fl.oz. / 887 ml
Currently In Stock: 0
US$17.99
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An exceptionally cold hardy and repeat flowering selection, Summer Skies Lily of the Nile produces light sky blue, trumpet shaped, nectar rich flowers in large rounded clusters beginning in early spring and continuing until the first frost on established plants. Considered reliably cold hardy into zone 5, this easy to grow perennial produces medium green strap-like foliage with the flowers towering above on sturdy stems. Attracts hummingbirds, butterflies, and bees. Provide a well-drained soil for the best results. Summer Skies Agapanthus makes a low maintenance clump forming perennial for the garden, landscape, and container gardens. Item# 11282

USDA Cold Hardiness Zones: 6,7,8,9,10,11,(5*)
Grows To: 24-36"H x 18-24"W, space at 12-18"
Outdoor Light: AM sun, Part sun, Part shade, Light shade, **Full sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$12.99
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Suwanne Blue-Eyed Grass

Sisyrinchium 'Suwanne'

Suwanne Blue-Eyed Grass produces a profusion of sky-blue, 3/4" wide miniature iris-like flowers for weeks in spring. A clump forming Iris-like native perennial, Suwanne is considered one of the best Blue-Eyed Grasses for gardens with its long flowering season and mannerly habit. Suitable for sun or light shade. Item# 10589

Grows To: 8-14''H x 12-16''W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

Often throughout summer, small, fragrant beautiful bell-shaped nearly white to blue flowers with gracefully recurving 'petals' (in Clematis it is the large colorful sepals that we often most enjoy) of light blue, blue, or purple. Grow the Swamp Leather Flower as a small perennial herbaceous vine that may top out at 5' but can reach 9' high. It can be cut back to 1-2' in later winter after the buds have begun to swell. Item# 10224.

Grows To: 5-9'H x 2-3'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
2.25 inch / 9.7 fl.oz. / 287 ml
Currently In Stock: 0
US$19.99
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Sweet Fantasy Hydrangea boasts unusual bi-colored flowers composed of pink petals that are striped with deep rosy red in alkaline soils or with blue and deep blue in acid soils. It is exceptionally rare to see a Hydrangea with such beautifully variegated flowers! Sweet Fantasy Hydrangea has a naturally rounded habit and will prefer a moist, well-drained soil with shade during the hottest part of the day. Item# 11416

Grows To: 3-4'H x 4-5'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Full sun in cool summer climates
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 37
US$14.99

Royal purple, 1/2" blooms that are edged in white lace, are born in drooping clusters from spring or early summer until frost and attract butterflies and bees. The nectar rich flowers are followed by grape-like clusters of 1/2" golden berries giving it the name of 'Golden Dewdrop'. Sweet Memories Purple Sky Flower is naturally a large multi-stemmed tropical shrub and can be trained into tree standards or use it as a hedge or screen in mild winter climates. In mild winters in zones 8B and 9, well-established plants may act as a die-back perennials or they can easily be overwintered as a container plants. Item# 579

Grows To: 4-6'H x 4'W (8-10'H x 10-15' in mild climates)
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$14.99
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Tall Larkspur

Delphinium exaltatum

Tall spikes of true deep purplish blue flowers are borne on sturdy 3-6' stems in summer on this truly perennial Delphinium. Tall Larkspur is a highly desirable native whose dark flowers are visited by hummingbirds and a variety of other pollinators. Each established plant can produce multiple spikes of flowers per year creating an extended display of color in the garden or meadow and under good conditions may reseed as well. Prefers a slightly alkaline well-drained soil in filtered sun to full sun conditions. Image courtesy of North Creek Nurseries, all rights reserved. Item# 10881.

Grows To: 3-6
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$12.99
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True Blue Gentian

Gentiana 'True Blue' PP20433

Clusters of deep blue 2" long pointed buds open to long-lasting tubular deep blue flowers that eventually fade to purplish-blue with the show beginning in early to midsummer and continuing into fall. True Blue Gentian is a hardy clump-forming perennial that develops into a well-branched 18-24"H x 12-18"W plant. A Darrell Probst is an open pollinated hybrid of Gentiana makinoi that is reported to be hardy into zone 8. True Blue Gentian does best in a full sun in areas with cooler summers and will likely need part shade where summers are hot. Provide it with a well-drained, average moist soil for optimum vigor and flowering. Makes a long-lasting cutflower as well as true blue addition to the garden and landscape. Image courtesy of AG3, Inc., all rights reserved. Item# 12286

Grows To: 18-24"H x 12-18"W space at about 12" apart
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$9.99
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Van Remsen Salvia, Anise Sage

Salvia 'Van Remsen' (S. guaranitica hybrid)

Large intense deep blue flowers emerge from tall spikes beginning in spring and continuing throughout the growing season and into fall. Van Remsen Salvia, an Anise Sage or chance hybrid, is an excellent nectar plant for hummingbirds and may also be visited by larger butterflies. Unlike many of the Salvia guaranitica selections available Van Remsen is a clump forming vigorous growing perennial that can hit 7' high bringing the flowers closer to the hummingbirds and towering over most other garden perennials. This cultivar was discovered in the garden of James Van Remsen of Louisiana and was named and introduced by Salvia guru Richard Dufresne of North Carolina. Provide a full to mostly sunny location in an average moist, well-drained soil for optimum vigor and flowering. Item# 12118

Grows To: 4-7'H x 2-4'W
Outdoor Light: Full sun, Mostly sunny, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$9.99
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Variegated Blue Sky Vine, Blue Trumpet Vine

Thunbergia grandiflora 'Variegata'

Large creamy yellow, white, and green foliage acts as the backdrop for large hanging clusters of 3" wide, sky blue trumpet shaped flowers that are produced on new growth throughout the summer and into fall. The Variegated Blue Sky Vine is a vigorous twining tropical vine that revels in the warmth of summer and this form appears to be just as vigorous and sun loving as the solid green form. Evergreen in frost free locations, establish in spring once the danger of frost has past as a die-back perennial vine in zones 8-9, or it can easily be maintained as a container plant where not hardy. Item# 1234

Grows To: 15'-30'H
Outdoor Light: AM sun, Part shade, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 16
US$17.99

A rare and unusual evergreen hydrangea-like shrub with deep green quilted foliage which is topped by clusters of blue blooms from summer to fall. Easy to grow and an excellent choice for shaded gardens. Item# 9312

Grows To: 4-6'H x 4-6'W
Outdoor Light: Part shade, Light shade

The medium to large mopheads are composed of deep blue to deep royal purple sterile florets that are edged in contrasting light blue to light lavender and are produced beginning in mid to late spring continuing into fall. Violet Crown Big Leaf Hydrangea is a vigorous yet compact plant with good branching habit and established plants can flower from summer to frost under good contidions. It is small enough to enjoy in medium to large containers as well as adding its vivid summer colors to the garden and landscape. Provide a moist, fertile, well-drained soil with shade during the hottest portion of the day in hot summer climates. Images courtesy of Star Roses and Plants, Inc., all rights reserved. Item# 12815

Grows To: 3-4'H x 4-5'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Full sun in cool summer climates
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 24
US$14.99

Wee Bit Giddy® Bigleaf Hydrangea (Dwarf Mophead, Repeat Flowering)

Hydrangea macrophylla 'SMNHML' PP32317, Can PBRAF

Large rounded clusters of flowers (sterile florets) in deep rosy pink or medium blue-purple, depending on your soil's acidity and the availibilty of aluminum, adorn the tidy compact well-branched plants with strong sturdy stems and dark green healthy foliage and are produced from summer to fall. Wee Bit Giddy® Bigleaf Hydrangea is a dwarf and compact, has good cold hardiness, and is a repeat flowering mophead that flowers both on this year's and last year's growth. Its tidy rounded, 2' high by 2 -1/2' wide size make it well suited for use in both containers and in gardens with limited space but it is no less useful in gardens and landscapes providing summer to fall color. As with other Bigleaf Hydrangeas, provide this Proven Winners® Color Choice® selection with a moist, well-drained, fertile soil in an area that receives morning sun with shade or filtered shade during the hottest portion of the day in areas with hot summer climates. In cooler climates Bigleaf Hydrangeas can tolerate full to mostly sunny sites. Some direct sunlight, preferably >4 hours per day, is needed for good bud and flower production. Photo courtesy of Proven Winners - www.provenwinners.com, all rights reserved. Item# 12911

 

Grows To: 2'H x 2-1/2'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Part sun, Full sun to Mostly sunny in cool summer climates
PW Quart Pot / 30 fl.oz. / 887 ml
Currently In Stock: 45
US$19.99

Large rounded clusters of flowers (sterile florets) in deeply saturated shades of rosy red or blue-purple, depending on your soil's acidity and the availibilty of aluminum, adorn the tidy compact well-branched plants with dark green healthy foliage from summer to fall. Wee Bit Grumpy® Bigleaf Hydrangea is a dwarf and compact, has good cold hardiness, and is a repeat flowering mophead that flowers both on this year's and last year's growth. Its tidy rounded, 2' high by 2 -1/2' wide size make it well suited for use in both containers and in gardens with limited space but it is no less useful in gardens and landscapes providing summer to fall color. As with other Bigleaf Hydrangeas, provide this Proven Winners® Color Choice® selection with a moist, well-drained, fertile soil in an area that receives morning sun with shade or filtered shade during the hottest portion of the day in areas with hot summer climates. In cooler climates Bigleaf Hydrangeas can tolerate full to mostly sunny sites. Some direct sunlight, preferably >4 hours per day, is needed for good bud and flower production. Photo courtesy of Proven Winners - www.provenwinners.com, all rights reserved. Item# 12910

 

Grows To: 2'H x 2-1/2'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Part sun, Full sun to Mostly sunny in cool summer climates
PW Quart Pot / 30 fl.oz. / 887 ml
Currently In Stock: 44
US$19.99

A crown of deep sapphire blue filaments create a striking contrast with the white petals and sepals that are held against the rich green foliage throughout the growing season. The Blue Crown Passionflower is a vigorous growing tropical vine and can easily reach 20' once well-established. This is also one of the most reliably cold hardy Passionvines with foliage remaining evergreen in the mildest 8B winters but dying back to the ground in severe winters and returning readily in spring. The Blue Crown Passionflower may spread somewhat by rhizomes but it is generally much more tame than the Maypop. Cross pollination may produce tropical tasting tangy fruit that surrounds the dark seeds inside. Click on "More Details and Growing Info" or the image to learn more about growing Passionvines as perennials in containers or in the garden and landscape. Item# 733

Grows To: 15-20'H+
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$14.99
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Willowleaf Eastern Bluestar

Amsonia tabernaemontana var. salicifolia

Only one of two Amsonia species to receive a 5-star rating in the Chicago Botanic Gardens trials! Showy clusters of light blue star-shaped 1" wide flowers are produced in spring atop sturdy stems cloaked in dark green willow-like foliage. The Willowleaf Eastern Bluestar has the same basic habit and growth requirements of the more common Eastern Bluestar, Amsonia tabernaemontana var. tabernaemontana, but with larger showier flower clusters that seem to cover the plant, a neat dense vase-shaped habit, and clean disease resistant foliage. An easy to grow, clump-forming native perennial that is tolerant of wet to average moist soils preferring a full to mostly sunny site in the garden and landscape. The flowers of Bluestars attract butterflies and hummingbird moths. Images courtesy of North Creek Nurseries, all rights reserved. Item# 11945

Grows To: 3-4'H x 3-4'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$9.99
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A rare and more robust Evergreen Chinese Hydrangea with larger leaves, thick sturdy stems, and larger individual flowers creating larger clusters of the unusual vivid blue blooms.  Easy to grow and an excellent choice for shaded gardens. Item # 9317.

Grows To: 4-6'H x 4-6'W
Outdoor Light: Part shade, Light shade, Filtered shade, Early AM sunlight
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$14.99
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YOU&ME® Together Bigleaf Hydrangea (Dwarf, Double Mophead, Repeat Flowering), French Mophead Hydrangea

Hydrangea macrophylla 'Youmefive', H. macrophylla 'RIE 05'? PBR, PP18508?

The large, fully double, sterile florets emerge either light pink (alkaline soils) or light blue (acidic soils with Aluminum) and deepen to rosy pink or deep blue as they age and can ultimately become red or deep purple in fall and winter. YOU&ME® Together Bigleaf Hydrangea was selected not only for its double flowers that are produced continuously throughout the growing season atop sturdy stems but also for its dense compact habit that lends it to use as a container specimen. It is equally useful in the garden and landscape for continuous color.  As with other Bigleaf Hydrangeas provide a moist, well-drained soil in an area that receives morning sun and shade during the hottest portion of the day, at least in hot summer climates. Images courtesy of Concept Plants BV®, all rights reserved. Item# 12481

Grows To: 2-3'H x 3-4'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Full sun in cool summer climates
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$17.99
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STARSHIP™ Blue Lobelia

Lobelia x speciosa 'PAS1302712' (L. x speciosa 'STARSHIP™ Blue') PPAF

Spikes of intense deep violet-blue flowers are produced from late spring or early summer and into fall on this repeat flowering hybrid native perennial.  STARSHIP™ Blue Lobelia was selected not only for its dark flowers but is also touted for its ability to repeat flower throughout the growing season. The nectar rich flowers attract hummingbirds, bees, and butterflies. These Lobelias prefer consistently moist, moderately fertile, well-drained soils and sunny conditions. STARSHIP™ Blue Lobelia can be enjoyed as a container plant as well as in the garden or landscape. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12258

Grows To: 18-24"H x 12-24"W
Outdoor Light: Full sun (consistently moist soils), Morning sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$12.99
Temporarily Out of Stock

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