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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.

 

Blue Ice Bluestar

Amsonia 'Blue Ice'

With some of the deepest blue flowers of any Amsonia and a consistently compact habit, Blue Ice has become one of the most popular Bluestar cultivars on the market. The clusters of deep blue, starry flowers open from deep violet buds and will be sure to brighten any spring garden. Yellow fall color adds to its interest. Bluestars are pest, disease, and deer resistant perennials that are considered to be somewhat drought resistant once well-established. Item# 10652.

Grows To: 12-24"H x 24-36"W
Outdoor Light: Full sun, Part sun, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$7.99
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Blue Knight Butterfly Bush, Buddleia

Buddleja 'Blue Knight' PP28178

Large dense fragrant flower spikes to 12" long are composed of many hundreds of small orange-eyed flowers that open lavender and deepen to dark violet and indigo and are held atop a compact mound of blue-green foliage. The honey-mead like scented, nectar rich flowers of Blue Knight Butterfly Bush or Buddleia are adored by a host of pollinators and garden beneficials including butterflies, bees, hummingbirds, and more! Provide a full to mostly sunny location in well-drained average moist soils for optimum health and flowering. Blue Knight is a Walter's Gardens introduction and is part of the Monarch® Butterfly Bush series. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 11694

Grows To: 3-4'H x 4-6'W
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 26
US$12.99
Cannot Ship To: OR,WA

Blue Mistflower, Wild Ageratum, Hardy Ageratum, Blue Boneset

Conoclinium coelestinum, Eupatorium coelestinum

Flat topped clusters of bluish-purple Ageratum-like flowers are born atop sturdy stems in summer and sometimes into fall. Blue Mistflower is a rhizomatous colonizing native perennial that may be best suited to naturalistic settings or among larger growing plants as a tall groundcover. Excellent for pollinators, particularly native bees. Item# 10458.

 

Grows To: 18-30"H x spreading, space at 8-12" apart
Outdoor Light: Full sun, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$7.99
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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. Item# 11217

Grows To: 6-12"H and slowly spreads
Outdoor Light: *Full sun, Part sun, Part shade, Light shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$7.99
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Bluish-purple 3" trumpets are borne in succession throughout summer and into fall on this upright to loosely open and spreading shrub-like tropical. The Morning Glory Bush is considered root hardy throughout much of zone 9. Provide your plants with a warm protected site, a well draining soil, and extra protection during hard or extended freezes for the best results. In frost-free climates the Morning Glory Bush can develop into a loose open shrub. Item# 329

Grows To: 6'H x 5'W
Outdoor Light: Full sun, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Cannot Ship To: AL,AR,CA,NC,OK,SC,TN,TX

Small clusters of 3 petaled purple flowers sit atop smooth sturdy blue green stems on this clump forming native perennial that begins flowering in early spring and may continue well into mid-summer. Ohio Spiderwort provides nectar to long-tongued bees and other pollinators and is an easy to grow clump forming perennial well-suited to naturalistic gardens and wildflower meadows. It is found naturally throughout the central and eastern US and is somewhat drought resistant once well-established. Item# 11186

Grows To: 20-30"H x 12-18"W
Outdoor Light: Full sun, Part sun, Part shade

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. Item# 9114

Blue dye can be extracted from the blossoms!!

Grows To: 6-10'H x 3-5'W
Outdoor Light: Full sun, Part sun, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$9.99
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Blue Porterweed

Stachytarpheta cayennensis, S. indica

Deep indigo 1/4" blooms adorn the long spike-like bloom stems from spring to frost above the rich green glossy foliage. Blue Porterweed is an intermediate growing Porterweed and has a fairly dense upright habit. An excellent choice for butterfly gardens or in containers. Also known as Blue Snakeweed, Verbena Azul, Cayenne Snakeweed. Item# 330.

Grows To: 3-4'H x 2-3'W
Outdoor Light: Full sun, Part sun

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

Grows To: 12-18"H x 18-30"W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

The Blue Selection of the Great Blue Lobelia produces loads of short dense spikes of consistently blue flowers all in a compact neat flowering form that is suitable for containers or in the garden and landscape. The summer flowers of the Blue Cardinal Flower are utilized by bees, butterflies, hummingbirds, and a variety of other pollinators. It also makes an easy addition to cut flower arrangements. Lobelia siphilitica is typically happiest in full to mostly sunny sites with moist, well-drained soils. Item# 11977

Grows To: 20-30"H x 12-18"W, space about 12" apart
Outdoor Light: Full sun (moist-wet soils), Morning sun, Light shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$9.99
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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.

Grows To: 15'-30'H
Outdoor Light: Full sun, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$12.99
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Blue Star Japanese Aster, Kalimeris

Kalimeris incisa 'Blue Star', Boltonia incisa 'Blue Star'

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

Grows To: 12-18"H x 18-24"W
Outdoor Light: Full sun to Mostly sunny is preferred, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$8.99
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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

Grows To: 12-16"H x 16-24"W, 24-30" in flower
Outdoor Light: Part shade, Part sun, Light shade, Full sun*

Spikes of deep blue to near purple pea-shaped flowers are produced in spring atop the gray-green foliage in mid to late spring. Blue Wild Indigo is a long-lived easy to grow native that develops and extensive taproot and so it prefers not to be moved once it begins to get established. Baptisias are durable pest and disease resistant perennials that should be considered the Lupine of the South. Provide a sunny position for optimum flowering. Like a fine wine these natives only get better with age. Item# 11593

Grows To: 2-4'H x 2-3'W
Outdoor Light: Full sun, Mostly sunny
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
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Blue Witches Hat, Hedgehog Sage

Pycnostachys urticifolia

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

Grows To: 3-4'H x 2-3'W and larger in tropical climates
Outdoor Light: Full sun, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$12.99
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An exceptionally cold hardy and repeat flowering selection, Blue Yonder Lily of the Nile produces deep cobalt 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. Blue Yonder Agapanthus makes a low maintenance clump forming perennial for the garden, landscape, and container gardens. Item# 11281

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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Blueberry Fair Siberian Iris

Iris x 'Blueberry Fair'

An award winning Siberian Iris, Blueberry Fair produces large flowers composed of deep violet-blue falls with contrasting white signals and slightly lighter blue standards produced on sturdy 3-4' stems in late spring to early summer. Blueberry Fair Siberian Iris is a clump forming rhizomatous perennial with upright to arching narrow deep green foliage that provides grass-like motion and interest even when the plants are not in flower. Provide Siberian Iris with an average moist to consistently moist moderately fertile soil and they can be planted near ponds, streams, and bog gardens as well as in average moist garden and landscape settings. They generally keep the best looking foliage where they have reliable access to moisture during the growing season. Blueberry Fair is the 2004 winner of the AIS Morgan Wood Medal (the highest award given exclusively to Siberian Iris by the AIS) and the Award of Garden Merit by the RHS Society. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 11940

Grows To: 24-36"H space at 12-18" apart
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$9.99
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Blueberry's Baby Spiderwort

Tradescantia 'Blueberry's Baby'

1-1/2" wide deep indigo blue 3-petaled flowers with brightly contrasting yellow stamens sit atop 18-24" high sturdy stems beginning in early to midspring and continuing until early to midsummer (earlier in warmer climates and later in cooler climates) atop a dense mound of dark blue-green foliage. Blueberry's Baby Spiderwort appears to be a vigorous seedling of 'Blueberry Sundae' that volunteered itself in our gardens. This is most likely a Tradescantia x andersoniana hybrid and is bigger in all regards as compared to Ohio Spiderwort. The flowers of Spiderworts attract bees and the occassional butterfly and are super easy clump forming garden perennials. Add them to mixed borders and naturalistic settings and they also make easy and low maintenance container plants. Item# 11950

Grows To: 18-30"H x 18-24"W
Outdoor Light: Full sun, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
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Bodacious Rhythm and Blues Salvia

Salvia guaranitica 'Rhythm and Blues' PP29585

Deep sapphire blue tubular flowers emerge from solid black calyxes on black stems atop the rich green anise scented foliage. Bodacious® Rhythm and Blues Salvia or Anise Sage is a hybrid that was selected and introduced by Salvia guru Kermit Carter and boasts larger more intensely blue flowers atop vigorous full plants with deep green foliage. It has consistently received top marks in trials across the US. The flowers attract hummingbirds as well as larger butterflies. Bodacious® Rhythm and Blues Salvia is compact enough for medium-sized containers and is a show stopper in the garden and landscape. Item# 11981

Grows To: 3-4'H x 2-3'W
Outdoor Light: Full sun, Mostly sunny, Part shade

The Brazilian Blue Buttonbush, a.k.a. Pineapple Sangria, produces a near non-stop display of 1" powdery-blue fuzzy flowers from spring to fall on this easy to grow tender perennial to reseeding annual. The flowers attract a variety of pollinators like butterflies, bees, and other garden beneficials. Provide a full to mostly sunny location in any well-drained soil for the best results. Item# 324

Grows To: 18''H x 24''W
Outdoor Light: Full sun, Part sun

Carolina Blue Chaste Tree, Vitex, Monk's Pepper Tree

Vitex agnus-castus 'Carolina Blue'

8-12'' spikes of blue fragrant flowers are borne in summer and are held atop the soft green fragrant blue-green foliage. A large deciduous, drought tolerant shrub or small tree with few pests or diseases and is great for butterflies, hummingbirds, and bees. ( #9128 is another great selection!!) Item# 9115.

Grows To: 15'H x 15'W
Outdoor Light: Full sun, Part sun

The Cityline® Paris Hydrangea produces deep rose colored mopheads (in alkaline soils) on compact plants with glossy disease-resistant foliage. The flowers (actually the large sterile florets) emerge with creamy centers edged in dark rose and mature to rich pink. Its exceptionally compact and well-branched habit lends this mophead Hydrangea to use as a container plant or near the front of the garden and landscape. In acid soils the flowers will lean toward rich blue to purple hues. Image courtesy of Proven Winners, www.provenwinners.com. Item# 11434

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$12.99
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Clear Sky Passion Flower, Passion Vine

Passiflora 'Clear Sky', P. caerulea 'Clear Sky'

Large, up to 5" wide, fragrant flowers with near white petals and sepals that are topped by a crown of contrasting deep blue filaments with a middle halo of pure white which quickly deepens to dark eggplant purple at its heart. Clear Sky Passion Flower is a complex tetraploid hybrid that was selected not only for its larger flowers and exceptional vigor, but also for its cold hardiness by Passiflora breeder Roland Fischer. Flowering begins in earnest in mid to late spring and continues throughout the warmer months. 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# 11259

Grows To: 15-30'H+
Outdoor Light: Full sun, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$14.99
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Cannot Ship To: HI

The large blue flowers are accented by contrasting golden yellow signals and are produced in midseason on a vigorous and easy to grow plant that reaches about 3' high. Clyde Redmond is an award winning Louisiana Iris that was named the 1974 Debaillon Award, the highest award given to any Louisiana Iris. Provide Louisiana Irises with a moist to average moist to moderately wet site for the best results in a full to mostly sunny position. In average moist sites consider providing midday or filtered shade. Louisiana Iris make easy additions to bog gardens and along ponds, lakes, or other consistently moist sites. Item# 12032

Grows To: 24-36"H
Outdoor Light: Full sun, Mostly sunny, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$9.99
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Blue Ice Bluestar

Amsonia 'Blue Ice'

With some of the deepest blue flowers of any Amsonia and a consistently compact habit, Blue Ice has become one of the most popular Bluestar cultivars on the market. The clusters of deep blue, starry flowers open from deep violet buds and will be sure to brighten any spring garden. Yellow fall color adds to its interest. Bluestars are pest, disease, and deer resistant perennials that are considered to be somewhat drought resistant once well-established. Item# 10652.

Grows To: 12-24"H x 24-36"W
Outdoor Light: Full sun, Part sun, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$7.99
Temporarily Out of Stock

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