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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.

 

Hybrid Blue Arrowleaf Sage

Salvia macrophylla x S. sagitatta

The bluest of the blues! Blue Arrowleaf Sage produces large branching clusters composed of dense spikes of 1" vivid cobalt blue tubular flowers that may be produced nearly throughout the year on this hybrid Salvia. Blue Arrowleaf Sage has large velvety arrowhead shaped aromatic foliage that seems to retain its tidiness throughout the growing season. The nectar rich flowers attract hummingbirds and butterflies alike. Grow it in the garden or as as a medium-sized container plant. These amazing images were kindly taken and shared with us by Susan Whitney. Can you spot the Ruby Throat nectaring in the lower left corner? Item# 9949

Grows To: 24-48''H x 12-16''W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 15
US$12.99

Imperial Blue Plumbago, Cape Leadwort

Plumbago auriculata 'Imperial Blue', P. capensis

Imperial Blue Plumbago produces large clusters of deep sky blue flowers from early summer until fall. Plumbago is a heat, sun, and drought tolerant tropical or tender perennial that makes a great addition to container gardens or it is often found growing as a groundcover, hedge, tree form, and espaliered on fences in mild winter climates. Item# 9739.

Grows To: 2-3'H x 3'W (6-8' in mild climates)
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

2-3" long, deep purple, slightly flaring tubular flowers are produced in large hanging clusters designed for hummingbird pollination. One of the darkest Iochromas, Indigo is a prolific flowering selection on a vigorous growing upright to spreading, naturally evergreen tropical shrub. This miniature cousin of the Angel's Trumpet is easily enjoyed as a container plant where not hardy. Provide good drainage and fertile, average moist soil in partial to filtered sun for the best results. Iochroma, Tubeflower, or Mini Angel's Trumpets flower on new growth so keep them growing and healthy for and endless display. Item# 804

USDA Cold Hardiness Zones: 9B,10,11 (8B? with protection)
Grows To: 4-6'H x 2-4'W
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
Temporarily Out of Stock

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Indigo Spires Salvia

Salvia x 'Indigo Spires'

Long spikes of deep indigo, tubular flowers are borne continuously from spring to frost on this vigorous perennial Salvia. Indigo Spires has long been one of our favorites and is a reliable performer in the landscape producing a 2-4 high plant with medium green foliage. The nectar rich flowers provide fodder for a variety of pollinators including hummingbirds, butterflies, and a variety of bees but especially bumblebees in our gardens. The flower color may appear more purple or more blue to different people, in this case it is all in the eye of the beholder. Item# 909.

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$10.99
Temporarily Out of Stock

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A vigorous award winning Louisiana Iris, Jeri produces loads of large, rich dark purple flowers in spring that are sure to stop traffic. Its vigor lends it to use as a tall groundcover for moist areas or it will do just fine in average moist garden soils. 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. Jeri Louisiana Iris won the Ira S. Nelson award in 1986. Item# 10488

Grows To: 30-36"H, space at 12-18"
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun

Kevin Matthews Louisiana Iris produces large purple flowers with contrasting golden daggers outlined in black along the outer edges of the standards. This is a vigorous and hardy Louisiana Iris that is part of the Fallen Heroes series hybridized by Lee-Ann Connelly, now Shearhouse, and marketed by Ag3 Inc. A portion of the price of each plant is donated to the Fallen First Responders charity that aids the children of both Firefighters and Law Enforcement. Multiplies readily in average garden soils, moist to wet soils, or they can be set in water gardens where the container is just below the water's surface. Provide a full to mostly sunny site for optimum vigor and flowering. Image courtesy of Ag3 Inc., all rights reserved. Item# 12140

Grows To: 24-30"H
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 23
US$14.99

Kobalt Blue Salvia, Anise Sage

Salvia guaranitica 'Kobalt'

Deep cobalt-blue tubular flowers are held atop the medium green lightly fragrant foliage from summer to fall. One of the darkest blue flowers for the perennial garden Kobalt Salvia, an Anise Sage, is much enjoyed by hummingbirds and larger butterflies. Use this reliable perennial Salvia in beds or containers. Item# 9255

Grows To: 36''H x 18-24''W
Outdoor Light: Full sun, Part sun, Part shade
3.5 inch / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$9.99
Temporarily Out of Stock

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Lecompte Vitex is noted for its extra large 8-12" spikes of purple-blue flowers that are born from late spring to fall. This is a vigorous and disease free and drought tolerant spreading to upright deciduous shrub or small tree that attracts hummingbirds, butterflies and other pollinators. Lecompte Vitex is another excellent introduction from noted plant breeder and author Greg Grant. A highly recommended 'Texas Lilac' selection of Vitex. (#9128 is another great selection !!) Item# 9167.

Grows To: 15'H x 15'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$12.99
Temporarily Out of Stock

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The large rounded mophead flower clusters are composed of sterile florets that range from deep sky blue, purple, to a bright pink, depending on soil acidity and the availability of aluminum, are produced from late spring or early summer into fall. Let's Dance® Blue Jangles® Bigleaf Hydrangea is a compact growing 2'H x 3'W plant with dark green foliage, strong sturdy stems, excellent flower power producing flowers on both old and new growth, and reliable zone 5 cold hardiness. The Let's Dance® Hydrangea series was developed in Michigan's harsh winters by breeder Tim Woods for reliable cold hardiness, excellent flower power, rich colors, with strong sturdy stems and a compact habit. 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# 12912

 

Grows To: 2'H x 3'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: 24
US$19.99

Let's Dance® Rave® Bigleaf Hydrangea (Dwarf Mophead, Repeat Flowering)

Hydrangea macrophylla 'SMNHMSIGMA' PP26929, Can 5628

The large rounded mophead flower clusters are composed of sterile florets that range from deep blue-violet, purple, to a deep saturated pink, depending on soil acidity and the availability of aluminum, are produced from late spring or early summer into fall. Let's Dance® Rave® Bigleaf Hydrangea is a compact growing 2-3'H x 3-4'W plant with dark green disease resistant foliage, strong sturdy stems, excellent flower power producing flowers on both old and new growth, and reliable zone 5 cold hardiness. The Let's Dance® Hydrangea series was developed in Michigan's harsh winters by breeder Tim Woods for reliable cold hardiness, excellent flower power, rich colors, with strong sturdy stems and a compact habit. 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# 12913

 

Grows To: 2-3'H x 3-4'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

Lindley's Butterfly Bush

Buddleja lindleyana

Deep violet flowers with a white eye hang like grapes from this upright to arching, deciduous to semi-evergreen shrub. The flowers of Lindley's Butterfly Bush, Buddleja lindleyana, are produced nearly continuously from late spring to fall and attract a variety of pollinators including hummingbirds, butterflies, and larger bees. This is a naturally suckering shrub and will slowly develop into a mass that can be utilized as an informal hedge or at the back of the border. Provide a full to mostly sunny site in well-drained soils for optimal vigor and flowering. Item # 341

Grows To: 4-6'H x 6'W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 9
US$14.99
Cannot Ship To: OR,WA

Compact, repeat flowering, and reliably hardy to zone 6! Large rounded clusters, to 4-5" across, composed of blue trumpets are perched atop strong 2' sturdy stems on a tight clump forming plant with upright to arching narrow rich green foliage. Little Galaxy Agapanthus boasting a more compact habit than its sisters in the Galaxy series making it suitable as a low maintenance container specimen or nearer the front of the border. Its flowers are a touch lighter blue than those of Galaxy Blue. The Galaxy Agapanthus series has been successfully trialed for over 7 years in Zeeland, Michigan by the folks at Walter's Gardens with excellent reliability, vigor and cold hardiness. Flowering may begin in mid spring in zone 8 but will likely flower in summer where winters are coldest. The flowers attract bees, butterflies, and hummingbirds. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item#12736

Grows To: 2'H x 2'W
Outdoor Light: Full sun, Morning sun, Part sun, Part shade, Light shade

Longwood Blue Bluebeard, Spiraea, Caryopteris

Caryopteris x clandonensis 'Longwood Blue'

Dense clusters of fragrant dark azure to blue-violet flowers nearly cover up the nicely contrasting blue-gray foliage of this shrubby perennial beginning in mid to late summer and continuing into fall. The flowers attract butterflies, bees, and other pollinators. Longwood Blue Bluebeard is a vigorous freely flowering selection of Caryopteris growing to 4' high and 3-4' wide and selected by Longwood Gardens of Pennsylvania. Caryopteris prefers a well-drained soil in a full to mostly sunny position. Somewhat drought resistant once well-established. A Missouri Botanic Gardens Plant of Merit award winner. Item# 11671

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

Mariesii's Variegated Big Leaf Hydrangea (Lacecap)

Hydrangea macrophylla 'Mariesii Variegata'. H. macrophylla 'Maculata'

The beautifully variegated cream to white and green to blue-green foliage of Mariesii's Variegated Hydrangea is sure to brighten any shaded garden. In summer the foliage is topped with domed clusters of pink or blue fertile flowers is surrounded by 1-2" wide sterile florets. This Hydrangea is cold sensitive and so may not flower if the flower buds are frozen. It may be at its best in the warmer portions of zone 8B and 9 where this is less likely to occur. Item# 703

Grows To: 3-4'H x 4-6'W
Outdoor Light: Cool morning sunlight, Filtered shade, Midday shade, Part sun, Part shade
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 0
US$14.99
Temporarily Out of Stock

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Large rounded clusters in shades of deep pink to near red (alkaline or no Aluminum), dark purple (neutral to acid), to near indigo(very acid) depending on soil acidity and the availability of Aluminum. Merrit's Supreme Bigleaf Hydrangea begins flowering early and the long lasting flower clusters mature into purple, red, and green shades. This is a compact growing Hydrangea with strong sturdy stems originally developed as a florist's Hydrangea but it has proven to be a reliably hardy, small to medium-sized deciduous shrub for the garden and landscape. Merrit's Supreme also makes an easy and low-maintenance container specimen and can be overwintered indoors outside of its hardiness range. The large glossy deep green foliage is disease resistant. Provide a moist, well-drained, fertile soil in an area that receives morning sun and shade during the hottest portion of the day for optimum vigor and flowering. Item# 12347

Grows To: 4'H x 4-5'W
Outdoor Light: Part shade, Morning sun, Part sun, Filtered sun, to Full sun in cool summer climates
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 19
US$14.99

Midnight Moon Blue Porterweed

Stachytarpheta cayennensis 'Midnight Moon'

The 3/8" wide deep inky blue-purple flowers sport a nicely contrasting white eye are produced along the wispy elongating flower spikes from spring to frost. Midnight Moon may be a hybrid or polyploid form of the common Blue Porterweed with slightly larger flowers but a similarly dense upright to rounded habit on a tidy looking plant. This is an excellent choice for bees, butterflies, and other garden beneficials that is well-suited to container culture or utilize it in the garden and landscape. Provide a full to mostly sunny site in an average moist, fertile, average to well-drained soil for optimum vigor and maximum flowering. Item# 12081

Grows To: 2-3'H x 2-3'W
Outdoor Light: Full sun, Mostly sunny, Part shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$12.99
Temporarily Out of Stock

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Mirage™ Blue Salvia, Autumn Sage

Salvia greggii 'Balmirleu' PP33036, EU PBRAF

Black spikes of dark purple tubular buds open from black calyxes to display the 1" long, two-lipped, tubular flowers in shades of deep blue, indigo, and violet that are produced from spring to fall atop this densely branching perennial Salvia with excellent flower power. Mirage™ Blue Salvia, a form of Autumn Sage or Salvia greggii, was selected for its heat and cold tolerance, and exceptional flower power. Its vigorous well-branched semi-compact habit is perfectly suited for use as a low maintenance and forgiving container specimen as well as in hot and sunny garden and landscape settings. The flowers are sure to attract low flying hummingbirds as well as the occassional butterfly and larger bees with its nectar rich flowers. Provide a well-drained soil in full to mostly sunny conditions and never keep soggy wet. Images courtesy of Darwin Perennials, all rights reserved. Item# 12875

Grows To: 12-14"H x 14-16"W space about 12" apart
Outdoor Light: Full sun, Mostly sunny

Mirage™ Violet Salvia, Autumn Sage

Salvia greggii 'Balmirvio' EU PBR49562; PP29724

Spikes of deep purple calyxes and tubular buds open to display the deep violet colored two-lipped tubular flowers that are produced from spring to fall atop this densely branching compact perennial Salvia with excellent flower power. A five-star performer in Salvia trials at the Chicago Botanic Gardens! Mirage™ Violet Salvia, a form of Autumn Sage or Salvia greggii, was selected for its heat and cold tolerance, compact rounded habit, and exceptional flower power. Its vigorous well-branched compact habit is perfectly suited for use as a low maintenance and forgiving container specimen as well as in hot and sunny garden and landscape settings. The dark colored flowers are sure to attract low flying hummingbirds as well as the occassional butterfly and larger bees with its nectar rich flowers. Provide a well-drained soil in full to mostly sunny conditions and never keep soggy wet. Images courtesy of Darwin Perennials, all rights reserved. Item# 12425

Grows To: 12-18"H x 16-24"W space about 12" apart
Outdoor Light: Full sun, Mostly sunny

MONARCH® 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 MONARCH® 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. This Walter's Gardens introduction and is part of the MONARCH® Butterfly Bush series that have been selected for rich colors, excellent flower power, and a midsize habit. 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: 15
US$14.99
Cannot Ship To: OR,WA

MONARCH® Glass Slippers Butterfly Bush, Buddleja

Buddleja 'Glass Slippers' PP27832

The 7-12" long conical panicles are composed of numerous fragrant icy periwinkle blue flowers that attract pollinators of all shapes and sizes throughout summer and into fall. MONARCH® Glass Slippers Butterfly Bush is a deciduous to semi-evergreen shrub with gray-green foliage and a densely branching compact, mounding habit that matures to about 3'H x 4-5'W. The nectar rich flowers attract butterflies, bees, hummingbirds, and other garden beneficals. Provide a well-drained soil in a full to mostly sunny site for optimum vigor and flowering. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12836

 

Grows To: 3'H x 4-5'W
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 26
US$14.99
Cannot Ship To: OR,WA

The 2-3" wide light sky-blue trumpets with yellow throats are produced throughout the warmer months of the year, to year-round under warm tropical conditions, attracting bees, butterflies, and hummingbirds all on a compact upright to spilling plant with medium green foliage. The Natal Blue Bell, Thunbergia natalensis, is very similar to the slightly more commonly grown Blue Glory Vine, Thunbergia battiescombeii. Like its cousin, this is a tropical herbaceous perennial producing a multitude of upright to sprawling stems to about 18-24" high and sprawling to about 36-48" wide and it can be enjoyed as a container plant or in the ground in zones 9 and warmer. Provide the Natal Blue Bell with a partly sunny to partly shaded site in a fertile, well-drained, average moist soil for optimum vigor and continuous flowering throughout the growing season. Item# 12703

Grows To: 18-24"H x 36-48"W, can be trained as a small trellis vine
Outdoor Light: Morning sun, Part shade, Part sun, Filtered shade, Bright shade
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 0
US$14.99
Temporarily Out of Stock

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Large rounded clusters of buds mature to rich rosy pink (alkaline soils) or purple to blue (acidic soils) and pistachio green stunning bicolor flowers on compact mounding plants. The Next Generation® Pistachio Bigleaf Hydrangea is a disease resistant repeat flowering selection that begins flowering in mid spring to early summer and continuing until fall on well-established plants. 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. The ability to flower on new wood versus old wood ensures that even in the hardest winters this new Hydrangea will still flower in the garden and landscape whereas some of the old wood flowering Hydrangeas may freeze to the ground and not flower. Image courtesy of Star® Roses and Plants, all rights reserved. Item# 11718

Grows To: 2-3'H x 4-5'W
Outdoor Light: Part shade, Morning sun, Filtered sun, Full sun in cool summer climates

Intense sapphire blue, 3-4" widely flaring flowers with dark purple stripes open in the morning and lighten to azure as the day wears on and finally fade to fuchsia pink in the afternoon. The Blue Dawnflower or Blue Morning Glory is a tender perennial Morning Glory that flowers from spring to fall on a vigorous climbing herbaceous vine that spreads and roots readily anywhere the runners touch the ground. Easily grown on a trellis or fence but will also happily climb into large hedges as well. An escaped species along the US Gulf Coast the Ocean-Blue Morning Glory was a winner of the RHS Award of Garden Merit in 1993. Item# 11001.
 
 

USDA Cold Hardiness Zones: 9,10,11,(8B*,8A?)
Grows To: 10-20'H+
Outdoor Light: Full sun, Mostly sunny
4.5 inch Pot / 20 fl.oz. / 591 ml
Currently In Stock: 12
US$14.99
Cannot Ship To: AL,AR,CA,NC,OK,SC,TN,TX

Omega Skyrocket Stokesia Daisy, Stoke's Aster

Stokesia laevis 'Omega Skyrocket'

A giant among Stokesias, Omega Skyrocket can reach heights of 3-4' when in flower and still produces the same large cornflower blue daisies typical of the species beginning in late spring with an extended flowering season that can continue into mid and late summer on well-established plants. Omega Skyrocket Stokesia was discovered by Ozzie Johnson and Ron Determann of the Atlanta Botanical Garden in Omega, Georgia in the1990s. Stoke's Aster comes highly recommended and it's easy to see why with moderate drought resistance, few pest or disease problems, deer and rabbit resistance and it revels in the heat and sun of our southern summers. Plants readily multiply into dense clumps. Super easy and tough. Item# 11951

USDA Cold Hardiness Zones: 7,8,9,(5,6 if mulched)
Grows To: 24-36''H x 12-16''W, to 3-4'H when in flower
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 15
US$12.99

Hybrid Blue Arrowleaf Sage

Salvia macrophylla x S. sagitatta

The bluest of the blues! Blue Arrowleaf Sage produces large branching clusters composed of dense spikes of 1" vivid cobalt blue tubular flowers that may be produced nearly throughout the year on this hybrid Salvia. Blue Arrowleaf Sage has large velvety arrowhead shaped aromatic foliage that seems to retain its tidiness throughout the growing season. The nectar rich flowers attract hummingbirds and butterflies alike. Grow it in the garden or as as a medium-sized container plant. These amazing images were kindly taken and shared with us by Susan Whitney. Can you spot the Ruby Throat nectaring in the lower left corner? Item# 9949

Grows To: 24-48''H x 12-16''W
Outdoor Light: Full sun, Mostly sunny, Part shade, Part sun
3.5 inch Pot / 16 fl.oz. / 473 ml
Currently In Stock: 15
US$12.99

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