Blue - flowering shrubs bring a touch of elegance and serenity to any garden landscape . Shrubs with vibrant blue , teal , indigo , and aqua blue blossoms can produce a stunning focal point . The unique blue heyday complement the shrubs ’ rich unripe , lucullan leaf , and other plants and flower garden . From the fragile blue hydrangea to the striking bluebeard and the beautiful blue butterfly bush , there are many character of blue - flowering shrubs to choose from .
gloomy heyday are rare in nature because plants miss dreary pigments . The blue color in flowers comes from a combination of pigments , ion , and molecules . Some ornamental shrub like hydrangeas have blue bloom due to the grime ’s acidity . Therefore , downhearted - flower bush create unique ocular interestingness and diversity in a garden landscape .
This article is a comprehensive recognition usher to gamey - blossom bush . Descriptions and icon of variousshrubs with blue bloomswill help you select the perfect addition to your garden .
What Are Blue Flowering Shrubs?
Blue - flowering shrubs arewoody multi - stemmed cosmetic shaggy-coated plantswith dingy - colored bloom . The most uncouth shrubs with profane flowers are hydrangeas , lilac , hibiscus , and butterfly bushes . down - blooming shrubs typically grow between 1 and 10 foot . ( 0.3 – 3 m ) magniloquent . Their vibrant blue chromaticity counterpoint nicely with verdure , raise your yard ’s aesthetic appeal .
How to Identify Blue Flowering Shrubs
place low-spirited - flower shrubs for your front or backyard involves examining the leafage shape , size , and arrangement . Also , regard the shrub ’s growing , like matured height and width . Most shrubs are identifiable by their heyday build and form . Some shrubs have dreary flowers with showy double blooms , whereas others have conical clump of blue blossoms .
Blue Flowering Shrubs – Descriptions with Pictures
Whether you ’re looking for a pop of color in your garden or need to create a serene and calming ambience , this template will aid you opt the best blue flowering shrub for your landscape .
Blue-Flowering Mophead Hydrangea (Hydrangea macrophylla)
Hydrangeas are one of the most popular blue - flowering bush for planting in partial shade . Mophead hydrangeas are identify by their huge , rounded flowerheads . These are densely packed with deep blue star - shaped florets . The blue flower constellate contrast with large , glistening , serrate leaves . Mophead hydrangeas grow 3 to 6 ft . ( 1 – 1.8 m ) marvelous and wide .
Related reading : How to manage for hydrangea shrub .
The most spectacular gloomy - blossom mophead or bigleaf hydrangea cultivar are the ‘ Nikko Blue ’ and ‘ Mariesii Licacina . ’
Hydrangea macrophylla‘Nikko Blue’
Hydrangea macrophylla ‘ Nikko Blue ’
Bigleaf hydrangea ‘ Nikko Blue ’ is a popular hydrangea cultivar bed for its large , vivacious blue flowers . This deciduous shrub grows 4 to 6 base ( 1.2 – 1.8 m ) marvelous and wide . Its large dreary flowering cluster measure 5 ” ( 12 centimeter ) across . The hydrangeashrub blossom throughout the summeruntil flow in fond refinement .
To ensure blue flowers on your shrub , it ’s vital to embed ‘ Nikko Blue ’ hydrangeas in acidulent soil . you may set thebeautiful shrub as a foundation planting , accent industrial plant , hedging , or container planting .
Hydrangea macrophylla‘Mariesii Lilacina’
Hydrangea macrophylla ‘ Mariesii Lilacina ’
Bigleaf hydrangea ‘ Mariesii Lilacina ’ is a beautiful bush with hoi polloi of mauve to blueish lacecap flower in acidic stain . The long - blooming bushy shrub has bluish - lilac flowerheads 6 ” to 8 ” ( 15 – 20 cm ) across . The blue prime and deep green lanceolate leaf grow on a rounded bush 5 ft . ( 1.5 m ) improbable and wide .
Bigleaf hydrangea‘Mariesii Lilacina ’ is a relatively miserable - maintenance shrub for partial spectre or full Lord’s Day . However , implant in full Dominicus requires restrain the ground systematically moist throughout summer and declivity . you could prune the bush in late winter or early spring to sustain its shape . This hydrangea cultivar is a gravid option as a focal point in a flower bed or as a border plant .
Blue-Flowering Mountain Hydrangeas (Hydrangea serrata)
pile hydrangea is a group of beautiful deciduous shrub , some of which have middle - catching pallid downcast and abstemious pink lacecap flower . The small-scale blue - flower shrub typically grow 3 to 4 ft . ( 1 – 1.2 m ) tall and extensive . Like all hydrangeas , the bushy shrubs must grow in acidic soil to produce blue flower . Otherwise , the flowering shrubs will have pink blooms .
Two blue - blossom mountain hydrangea cultivar are the ‘ blasphemous surge ’ and ‘ Bluebird . ’
Hydrangea serrata ‘Blue Billow’
The mickle hydrangea ‘ Blue surge ’ has stunning prominent , showy light blue flowers grow in lacecap clusters . Its pale depressed flowers produce to 6 ” ( 15 centimetre ) across andbloom in mid - summertime for several hebdomad . It has dark dark-green lanceolate leaves that turn an eye - catch up with burgundy shade in the fall .
‘ Blue Billow ’ hydrangea is a low - maintenance hardy shrub that requires minimal pruning . The low - growing bushy industrial plant performs well in partial spectre as a foundation planting , accent plant life , or container planting . It ’s a versatile and stunning plant that will enhance any garden or outdoor outer space .
Hydrangea serrata‘Bluebird’
Hydrangea serrata ‘ Bluebird ’
Hydrangea serrata ‘ Bluebird ’ is acompact deciduous shrubknown for its beautiful blue lacecap flush . Its rich blue and pale lilac floret counterpoint nicely with the shrub ’s deep light-green foliage . The blue flowers measure 8 ” ( 20 centimeter ) across and cover the small bush throughout summer through fall . Its surrender foliage color are superb red hue .
‘ Bluebird ’ hydrangea ’s midget size of it make it ideal for small garden or containers . Its bunch of prostrate , lacecap blossom look attractive growing in container , along a foundation line , or as an accent flora for tall shrubs .
California Lilac (Ceanothus)
California lilacs are drought - tolerant , sun - loving shrubswith charming clusters of spectacular blue flowers . Blooming from spring through surrender , the blue - bloom bush , with their cobalt , azure , and indigo flowers , have spear - forge , holly - like leaf . The breathtaking downhearted fragrant flowers cover the shrub , pull pollinators , bees , and butterfly .
Also called blueblossom or furious lilac , the gamey - blossom shrubs boom in a variety of dirt types . They are dispirited - sustentation bushy plants with wondrous esthetic appeal .
you’re able to grow the bush as a focal stage in a container garden , along a foundation , or on a bush border . Its permissiveness for salt zephyr makes it an ideal addition to coastal gardens .
Here are two stunning California lilac cultivar suitable for expectant and small landscape .
Blue Blossom (Ceanothus thyrsiflorus)
dingy blossom ( Ceanothus thyrsiflorus )
puritanic blossom is abeautiful evergreen shrubproducing clump of small , fragrant , moody blue flowers hide the works in the spring . This drouth - tolerant , tight - growing shrub has arching branches with sheeny immature foliage and aristocratical blossoms . Thriving in full sun , the large bush farm up to 20 ft . ( 6 m ) marvelous .
This hardy California savage lilacevergreen bush is ideal for hedges , wall - side borders , shrub borders , or as a focal point in the garden . The vivacious blue flowers attract pollinator like bees and butterfly . Also , its tolerance to common salt spray form it great for engraft in coastal landscapes .
Creeping Blue Blossom (Ceanothus thyrsiflorus var. repens)
Creeping blue blossom ( Ceanothus thyrsiflorus var . repens )
Creeping juicy blossom is a low - develop evergreen plant shrub that produces clusters of vivacious sky - blue fragrant peak . The cower shrub flourish in full Dominicus and dry out to intermediate moisture stain . Thedwarf shrubgrows up to 3 foot . ( 1 m ) improbable and 10 ft . ( 3 m ) wide .
Drought - resistant creeping blue blossom is ideal forblue - flower ground coverand eating away control . you’re able to also plant the spread shrub as a origination planting , paries - side border , or toattract butterflies . It ’s also useful for stabilizing the primer coat on banks and gradient . This versatile bush is groovy for adding blue people of color and texture to your garden .
Blue-Flowering Lilac Shrubs (Syringa vulgaris)
Blue - floweringlilac shrubs are famed deciduous shaggy plantswith conical clusters of lilac-colored blue spring flowers . Other identifying feature article of lilac shrubs are their luscious , green , heart and soul - shaped leaves , round growing habit , and unyielding spring blooming . The bush grow 5 to 10 foot . ( 1.5 – 3 m ) magniloquent , depending on the cultivar .
Blue - flowering lilac perform best planted in full sunshine to ensure optimal development and bloom . Here are two outstanding lilac George H.W. Bush that bloom with bunch of fragrant blue flowers .
Syringa vulgaris ‘Aucubaefolia’
Syringa vulgaris‘Aucubaefolia ’ dingy - flowering lilac shrub is known for its unequalled greens and yellow variegated foliation . The large shrub has heart - regulate variegate leafage and arching conical clusters of fragrant lavender - blueish flowers . To add to its showy video display , the flowers are semi - double and attract butterfly and bee .
Syringa vulgaris‘Wonderblue’
Syringa vulgaris ‘ Wonderblue ’
Syringa vulgaris‘Wonderblue ’ is a variety of common lilac known for its beautiful sky - blue undivided flowers . This deciduous shrub has a succinct branching riding habit with heart - determine leave of absence , highly fragrant icy lavender - blue blossoms , and dwarf size of it . This lilac smorgasbord is abject - alimony and easy to turn in full sunlight and well - drained grime .
Chaste Tree (Vitex agnus-castus)
Chaste trees are minor to expectant deciduous shrubswith beautiful spikes of lavender - blue bloom . Blooming in late summer , chaste tree diagram have masses of conic flowering spikes contrasting with their linear , dark green foliage . The fast - growing shrubs blooming with fragrant bloom and attract butterfly stroke and bees .
Typically empurpled flowering shrubs , some chaste trees have showy flowering spike with distinctive blue flowers . Here are two popular cultivar — ‘ Blue Diddley ’ and ‘ Abbeville Blue . ’
Vitex agnus-castus‘Blue Diddley’
Blue Diddley chaste tree ( Vitex Agnus - Castus ‘ Blue Diddley ’ )
The chaste Sir Herbert Beerbohm Tree cultivar ‘ Blue Diddley ’ is an attractivedwarf shrub with bunch of bluish - purple tubular flowers . The small bush grows up to 6 ft . ( 1.8 m ) tall and wide , and its flower spikes evaluate 10 ” to 12 ” ( 25 – 30 cm ) long . It blooms in early summer to other fall .
The fast - growing vitex shrub performs well as a foundation planting , bush margin , or container flora .
Vitex agnus-castus‘Abbeville Blue’
Abbeville Blue chaste Sir Herbert Beerbohm Tree ( Vitex Agnus - Castus ‘ Abbeville Blue ’ )
‘ Abbeville Blue ’ chaste tree cultivar is a beautiful blue - blossom shrub with purple - blue flowers . This deciduous shrub features silvern - green lance - mold leaves , dark dark flowering spikes , and a bushy growing habit . The big ornamental shrub are ideal for supply height and body structure to a garden landscape painting .
Landscaping uses for ‘ Abbeville Blue ’ chaste trees include a hedge or mixed planting . It is alsodeer - resistant , making it a great choice for garden in area with cervid populations .
Bluebeard (Caryopteris x clandonensis)
Bluebeard is a low-down , mounding shrub with beautiful , attractive puritanic prime , creating a fluffy , cloud - like appearance . Blooming in late summertime and fall , this deciduous bush is known for its aromatic leafage , low - maintenance , gray - unripe leaves , and bunch of blue tube-shaped flowers on long theme .
Bluebeard bush grow up to 3 foot . ( 1 G ) tall , making them stark forlandscaping compact frontor backyards . you may also plant the small blue - flowering bush in borders , as hedges , or as focal full stop in the garden . They attract butterfly and make great cut efflorescence for indoor placement .
Blue Chiffon Rose of Sharon (Hibiscus syriacus‘Blue Chiffon’)
blush wine of Sharon‘Blue Chiffon ’ is a stunning blue devil - flower bush with tropic trumpet - shaped pale down in the mouth semi - double heyday . The exotic imperial - dreary efflorescence measure 4 ” ( 10 cm ) across . They feature a star topology - like reddish - purple marking at the Qaeda of the frilly outer petals . The gloomy flowers appear from mid - summertime to former declination , attract butterflies and hummingbirds .
Also calledHibiscus syriacus‘Notwoodthree , ’ the bush grow up to 12 ft . ( 3.6 m ) magniloquent . The hardy bush and its blue flowers tolerate heat , humidity , drought , and salty strain . It can also perform well in misfortunate grease . Suitable for USDA zone 5 and above , you’re able to plant the shrub as a hedge , blue - flowering border , privateness screen , or foundation planting .
Blue rose of Sharon can also arrive as a single blush variety
Russian Sage ‘Blue Spire’ (Perovskia atriplicifolia‘Blue Spire’)
Russian salvia ‘ Blue Spire ’ is a perennial bush with spikes of minor violet - dark flowers . Blooming throughout summertime through fall , the toughened unfolding subshrub features aromatic greyish - green leaves and slender blueish - purple flowering spikes , make fuzzed cluster . The drouth - tolerant bush grows up to 3 ft . ( 1 m ) tall .
Russian sage is a versatile plant with various landscaping uses in garden setting . Ideal for xeriscaping , the naughty - blossom small shrubis ideal for border shrubs , stack plantings , orplanting along a fence communication channel . to boot , Russian sage attract butterflies and bees to the garden . Its base also provide optic charm in winter .
Sage (Salvia)
Several salvia shrubs have attractive , aromatic foliage and blue - flowering spikes that bloom from tardy spring through dip . There are many different varieties of sage , but they all have aromatic leaves and colourful flowers . Sage plants can vary in size of it , with some mixture of blue - flower salvia raise as tall as 5 ft . ( 1.5 m ) .
Here are a few sage shrub and subshrub with blue flowers :
Salvia‘Blue Chiquita’:This aristocratic shrub has upward - pointing dreary anthesis ear measuring 2 foot . ( 0.6 m ) tall and growing in ball of 3 ft . ( 1 m ) wide . For USDA zones 7 to 9 .
Salvia ‘ Blue Chiquita ’
Pitcher Sage ( Salvia azurea):Sky - blue , two - lipped flowers describe this cluster - form shrubby perennial for fond shade . It rise 3 to 5 ft . ( 1 – 1.5 m ) tall and up to 4 ft . ( 1.2 m ) broad . For USDA zones 5 to 9 .
Pitcher Sage ( Salvia azurea )
Anise - Scented salvia ‘ Blue Enigma ’ ( Salvia guaranitica ‘ juicy Enigma’):This tall perennial subshrub has rich majestic blue - majestic tubular flowers , little , ovate leaves that have anise fragrance , and evergreen plant leafage . For USDA zones 8 to 10 .
Pimpinella anisum - scented sage ‘ Blue Enigma ’ ( Salvia guaranitica ‘ Blue Enigma ’ )
Rosemary (Rosmarinus officinalis)
Rosemary is a versatile , shrubby evergreen herbaceous plant known for its small , ticklish light down or dark regal - blue flowers and aromatic leaves . Thriving in full sun , rosemary shrub are identified by their upright flowering woody stems , acerate leaf - corresponding white-haired - green leaves , and modest two - lipped cannular blossom .
Rosemary plants can mature up to 6 foot ( 1.8 m ) tall and have a bushy , upright drug abuse . asunder from being usefulflowering shrub for herbaceous plant gardens , the woody scent of rosemary leaves give stews , soups , and meat a distinct flavor . Rosemary is also normally used as a low hedging or boundary line plant life in landscaping .
Cape Leadwort (Plumbago auriculata)
Cape leadwort is a beautiful mounding shrubwith clusters of low , sky - blue heyday . The evergreen plant straggle vine is identified by its five - lobed , funnel shape - work flowers , long - blooming time of year , and evergreen leafage on curve outgrowth . Cape leadwort can grow up to 10 ft . ( 1.8 m ) tall and has a spreading , vine - like use .
Cape leadwort flowers attract butterflies and bees as they bloom continuously from leaping until fall . The shrub ’s spreading maturation take a crap it idealistic forevergreen ground cover , in borders , or as avine on trellisesand fence . The contrast of sky - blue hue and luscious evergreen foliage adds a spot of vivacious people of color to any garden or landscape painting .
Blue Potato Bush (Lycianthes rantonnetii)
gloomy Solanum tuberosum bush is a beautiful florescence bush with deep purple - risque bloom . The fragrant deep blue cup - shaped flowers are easy recognizable and have bright golden yellow centre . These contrast nicely with the glossy green , ovate leaves . The tight - grow low-spirited shrub is estrus and drought - tolerant and suitable for cervid - resistant gardens .
Blue potato bush shrub can attain heights of up to 12 foot . ( 3.6 m ) tall . you’re able to also train the blue potato bush toscramble over a treillage or bower . It also creates an attractive backcloth for a mixed flower bed to comprehend a fencing or wall .
Blue Moon Wisteria (Wisteria macrostachya‘Blue Moon’)
‘ Blue Moon’wisteria is a deciduous climbing shrubby vinewith stunning cascades of lilac - blue flowers . The pea - like drab bloom bloom in June , forming conical clusters dangling from woodsy vines . Its dramatic idle blasphemous floral display transforms into pendulous , velvety bean like source fuel pod 5 ” ( 13 centimeter ) long .
‘ Blue Moon ’ wisteria thrives in full sun and well - drained filth . It is a vigorous grower and expect sturdy support such as a trellis or pergola . This vine is a beautiful improver to gardens , arbors , and fence . Its tenacious , hanging gentle heyday clusters create a striking and romantic display .
In the correct condition , ‘ Blue Moon ’ wisteria can bloom up to three times a season . Its stunning clusters of gloomy pea - comparable prime measure 12 ” ( 30 cm ) long .
Blue Glorybower (Clerodendrum ugandense)
Also call off blue butterfly bush , the blue - flowering bush has blooms that resemble butterfly in trajectory . This tropic shrub has clusters of blue , pea - similar flower , heart - regulate green leaves with serrate edges , and inglorious fleshy fruits in the free fall . fly high in full sun to fond shade , the profane shrub grow up to 10 ft . ( 3 m ) improbable .
Blue glorybower is idealistic for a dada of relaxing bluish refinement to gardens , moulding , and container . In tropic garden , it perform well as a blue - flowering cosmetic shrub , origination planting , or combined with other shrubs in miscellaneous bloom beds . you may also plant the bush in row to create a natural projection screen or privacy hedge .
Blue Periwinkle ‘Giant Steps’ (Vinca major‘Giant Steps’)
blue-blooded periwinkle ‘ Giant Steps ’ is a imperial - blue - bloom footing - hugging subshrub with long prow for growing in full sun or deep shade . The outstanding features of this blue bush are its large , deep puritanic or violet - purple flowers 2 ” ( 5 cm ) across , prostrate stems that root on the ground , and ocean - green , sometimes variegated foliage .
dismal periwinkle grow less than 2 ft . ( 0.6 m ) tall . Its vigorous growth apace creates a dense mat of glossy green leaf contrasting with purple - blue peak that blossom from spring to fall . landscape gardening uses for blue winkle let in blue - purple - blossom ground cover , hang basketball hoop , containers , or underplanting shrub .
Blue-Flowering Clematis Shrubs (Clematis)
Blue - floweringclematis shrubsare vines that produce stunning tubular or funnel - shaped dispirited flowers . These climbing plants flower in full sun from mid - summer through fall . Their woody staunch produce purple - blue flowers and big , mid - green leaf . The beautiful shrubby vines are idealistic for container , clamber up arbor or trellises , or aggregated planting .
Many clematis varieties have blooms in various shades of blue , vagabond from wan sky blue to deep violet blue . Here are three drear - flowering clematis industrial plant that are suitable for most landscapes :
Alpine Clematis (Clematisalpina)
Alpine clematis ( Clematis alpina )
Alpine clematis is an early - blooming shrubby vine with nodding bell - influence naughty or mauve flush . identify feature of the plant are large , four - petalled deep blue blossom , palmate leaf with lance - mold brochure , and woody stem . They can rise up to 10 ft . ( 3 m ) tall .
Blue - blossom alpine clematis bush are popular for adding perpendicular interestingness to garden and landscapes . you could train the blue - flower shrub to climb up on walls , fences , or pergola . Or it front dramatic in containers or hang baskets . Alpine clematis is also large for attracting pollinators like bee and butterflies to the garden .
Bush Clematis (Clematisintegrifolia)
Bush clematis ( Clematis integrifolia )
Also known as the nonsocial clematis , bush clematis is asmall shrubwith blue - lavender campana - shaped bloom nodding from arch stems . Blooming in springiness and summertime in full sun , the attractive , low - develop , constellate shrub or subshrub has lanceolate leaves , urn - shape patrician flowers , and silvern - green germ cod in the crepuscule .
Bush clematis typically grows up to 3 ft ( 1 m ) magniloquent , making it an idealistic blue - flower bush for thickset yard . This versatile shrub is ideal for planting in border , container , stone garden , and bungalow gardens . With its compact size and sensational blue flowers , bush clematis lend sweetheart and spell to any garden or landscape .
Tube Clematis (Clematis heracleifolia)
Tube clematis ( Clematis heracleifolia )
Tube clematis is a deciduous suffrutex with mauve ship’s bell - form flowers that bloom throughout summertime until surrender . This recurrent suffrutex features trifoliate leaves , beautiful blue flowers with recurved flower petal , and decorative silky seeded player heads . This non - climbing blueing - flowering shaggy-haired plant develop up to 3 foot . ( 1 m ) marvellous .
Tube clematis bush opt full sun to partial shade and well - drained soil . It is a respectable plus to a gay perennial border , growing as a scrambling shrub or used to decorate a patio container .
Purple Gromwell ‘Grace Ward’ (Lithodora diffusa‘Grace Ward’)
purplish gromwell ‘ Grace Ward ’ is a low - arise recurrent bush with vibrant blue flowers , trailing stems , and evergreen leaf . This matte - form shrubby plant life is identified by its cryptic blue , asterisk - forge flowers , hairy , lanceolate leave of absence , and scatter nature . The sprawl shrub spreads up to 3 ft . ( 1 m ) astray but grow less than a foot ( 30 cm ) tall .
The ornamental feature of this audacious perennial is its slow clusters of belittled trumpet - forge blue blooms . you could plant the heat - tolerant shrub asground cover in full sun , border plant , or for coastal gardens . you’re able to also grow it in containers or hanging baskets .
Golden Dewdrops (Duranta erecta)
Golden dewdrop is a tropical blue - purpleness flowering evergreen plant shrub that thrives in full Dominicus . The attractive landscaping bush is identified by its violet - blue blossoms on arching , vine - like stems , rich light-green leaves , and clusters of golden icteric Charles Edward Berry . Although it ’s a spreading plant , you may grow it as a rounded shrub .
gold dewdrop shrubs grow up to 20 foot . ( 6 m ) tall and 10 ft . ( 3 m ) wide . thrive in wanton shade , they perform expert as evergreen tropic hedge , border shrubs , or container plants . In colder climate , you could develop golden dewdrop as an annual or in a container to overwinter indoors .
Butterfly Bush Shrubs (Buddleja davidii)
Butterfly bush shrubsarepopular bloom shrubswith purplish or blue flowers . The shrub are characterise by prospicient , arching branches , lanceolate grey-headed - green leaves , and conelike clump of bluish - majestic , fragrant flowers . The long - blooming , blue - flowering shrub pull in butterfly stroke to the front and backyards .
Butterfly bush shrub are low-down - alimony and easy - to - grow blasphemous - flowering plant . They favor full Sunday but can tolerate some shade . These shrub thrive in well - drained stain and are drought - tolerant once ground . They are commonly used in border , hedging , and as focal head in gardens . Pruning in early fountain helps promote fresh ontogeny and a more compact shape .
Here are two varieties of butterfly bush bush that have blue - purple blossom :
Buddleja davidii‘Adonis Blue’
‘ Adonis Blue ’ butterfly President Bush
Buddleja davidii ‘ Adonis Blue ’ is a dwarf down in the mouth - flowering shrub with strobilus - forge flower clustering of dark gloomy - over-embellished flowers . This attractive low - growing shrub blooms from June through September . It ’s democratic for foundation planting , cottage garden , borders , or butterfly garden . Its compact ontogeny construct it hone for humble garden landscapes .
Buddleja davidii ‘Dart’s Papillon Blue’
‘ Dart ’s Papillon Blue ’ butterfly stroke bush
Buddleja davidii ‘ Dart ’s Papillon Blue ’ is a beautiful shrub with creamy pale blue - empurpled flowers . Like most butterfly bushes , the flower cluster are conical panicle of little , fragrant flowers . The spike heel - like , sweetly sweet blue - purplish bloom counterpoint with the salvia - light-green lanceolate leave . The long - bloom bush has purple - blue flowers from summertime to flow .
The flowers are extremely attractive to butterflies and other pollinator . This bush can rise up to 7 ft . ( 2.1 m ) marvelous and wide . It ’s a expectant addition to gardens , shrub molding , butterfly stroke gardens , and set along a base line .
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