research the skilful blue hydrangea varieties to grow , plus get summit for keeping them blue yr after yr .
Of all thehydrangeas on the marketthese days , only one species produces the beautiful gentle flowers that these plants are live for . Commonly called the bigleaf hydrangea ( Hydrangea macrophylla ) , this type is unique because the flush ( technically sepals ) can appear bright pink to purple to promising depressed , depending on the soil acidity . you could savor thesestunning depressed bloomson scores of cultivar in either mophead or lacecap fashion . The good dark hydrangea sort in this list also offer improved characteristics such as reblooming , thick size , and more hardiness .
Native to East Asia , bigleaf hydrangeas are hardy in Zones 6 - 11 ( some varieties are even more hardy ) . They prefer organically enrich moistsoils with dear drainageand a partially sunny location , although they can manage full sun in cool summer regions provided they ’re give ample moisture . In cold regions , you may need toprovide some winter protectionto guarantee your hydrangea bloom the next year .

Credit: King Au
Nikko Blue
Bob Stefko
If you ’ve visit large disconsolate hydrangea flowers before , chances are you ’ve watch this cultivar . come from Japan , ' Nikko Blue ' faithfully work disconsolate in home garden and like the bigleaf species , grow to about 6 feet tall and across-the-board . Plant your ' Nikko Blue ' in moist , well - mulched soilsin part shade for them to attend their best throughout the raise season .
Endless Summer
Endless Summer is often credit for changing the game for hydrangeas with their ability to give rise flower bud on erstwhile and newfangled growth , unlike the species which create flower buds only on the previous year ’s maturation . This ability andhardiness down to Zone 4has allowed northern gardener to enjoy the “ mophead ” blooms of bigleaf hydrangeas without fear of fall behind bud over wintertime . Endless Summer grows slightly short than the specie .
Pop Star
Bailey greenhouse
A new introduction in the Endless Summer line , Pop Star sport electric bluelacecap flower question all summertime long on very stout stem . These plant are reasonably thick , develop to just 3 infantry tall and broad at maturity date . Pop Star also is very hardy , reliably add up back each spring down to Zone 4 .
Blue Enchantress
Monrovia.com by Doreen Wynja
Another reblooming down hydrangea with validity to kicking , ' Blue Enchantress ' farm to a max tallness and width of about 5 groundwork , make it a spot more thick than the species . Blooms start out a lightheaded sky blue and finally change to a creamy green .
Blue Jangles
Proven Winners
From the Let ’s Dance series , ' Blue Jangles ' is an improvement on color in the reblooming and dwarf categories . grow to only 3 metrical unit tall and exceptionally stocky , thissmall hydrangeais with child for tight spaces and containers .
Starlight
Another summation from the Let ’s Dance serial publication , ' Starlight ' produces gorgeous lacecap flowers . Unlike the traditional mophead look , lacecaps produce drop flush head thatbloom more sporadically , raise a starry facial expression . It suffer up to 4 feet marvelous and is substantially spring up in Zones 5 - 9 .
Big Daddy
Heading in a totally different guidance in full term of size and blossom shape , ' Big pappa ' is a prominent hydrangea , reaching upwards of 6 feet tall and get huge mophead case flowers . A little more sensible than most on the list , this gentle giant prefers part ghost and changeless moisture to keep its giant flower heads and is only hardy to Zone 6 and higher .
Cape Cod
Back on the smaller end of the spectrum , ' Cape Cod ' is a part of the Seaside Serenade series that combines a little size of it ( about 4 substructure tall and wide ) and hardiness down to Zone 4 . This grim hydrangea is corking for in - ground planting in the N and can begrown in potsyear - round further south . ' Cape Cod ' is a repeat bungle with two tone blue and white item-by-item flowers , present it a unique looking at .
Twist-N-Shout
KRITSADA PANICHGUL
' Twist - N - Shout ' give a maximal size of 4 feet magniloquent and panoptic , is moth-eaten hardy , has a lacecap style , and has repeat blooms . Against the darker , unopened bud , the lite drab color of the flower heads really pop , creating a beautiful and optic - catching outcome .
Keeping Blue Hydrangeas Blue
In basic to neutral soil , bigleaf hydrangeas will produce pinkish bloom while in acidulous dirt , down flowers are produce . So if your soil has a electroneutral or high pH , you will need totreat the grease around your blue hydrangeaswith atomic number 13 sulphate to keep that blue color .
While there are many home therapeutic for acidifying the grime such as mulching with pine needle and burnt umber grounds or citrus Peel , the honorable and most in effect direction is to purchase ready - made soil acidifier product at your local garden centre . These products will not only do the trick , but have longer - lasting essence . They hold both an acidifier as well as aluminium , which is also necessary for producing sorry hydrangea . Plus , some of these acidifiers include extra plant nutrients as well to support the overall health of your plant . Plan to add the acidifier in spring before buds begin to separate open , and again in late fall .
Frequently Asked Questions
In colder regions , plant during previous spring or former downslope for the best results . If the ground freeze in your area , make certain to plant 6 weeks before the first freeze date .
Yes , you should oftentimes irrigate hydrangea , specially when they are new planted or when the weather is extra warm . The leave will turn scandalmongering if you ’re overwatering and will wilt if you ’re not allow them with enough water .
It ’s best to plant these bloom in an area with morning sun and afternoon shade . Also make certain to plant in well - draining , acidic soil if you want blue flowers .

Credit:Bob Stefko

Credit: Erica George Dines

Credit:Bailey Nurseries

Credit:Monrovia.com by Doreen Wynja

Credit:Proven Winners

Credit:Proven Winners

Credit: Lynn Karlin

Credit:Monrovia.com by Doreen Wynja

Credit:KRITSADA PANICHGUL