Genus: Hydrangea

With wonderful full-headed blooms, hydrangeas are fantastic anywhere. There are 80 or more species of this shrub or climber that have their origins in E. Asia and North and South America.

The blue colours of some varieties can be affected by the amount of aluminium ions in the soil – meaning if you have acid soil they’ll be blue, alkaline makes pink and neutral soil might go either way especially if helped with a blueing compound! Other colours include cream, white and cerise.

H. serrata var. amagiana is used to make a very sweet tea used in Buddhist ceremonies called ‘Tea of heaven’.

Members growing plants in this genus

  • bluebell

    Bluebell

    joined 4 Jul, 2007

    8 plants

  • AndrewR

    Andrewr

    joined 7 Aug, 2007

    478 plants

  • DaveDarwent

    Davedarwent

    joined 11 Nov, 2007

    40 plants

  • caitio

    Caitio

    joined 25 Nov, 2007

    12 plants

  • Chrispook

    Chrispook

    joined 18 May, 2007

    251 plants

  • spritzhenry

    Spritzhenry

    joined 17 Jun, 2007

    483 plants

  • Janette

    Janette

    joined 7 Feb, 2008

    203 plants

  • Xela

    Xela

    joined 1 Mar, 2008

    218 plants

  • treesandthings

    Treesandthi..

    joined 16 Feb, 2008

    158 plants

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    Buzzbee

    joined 23 Dec, 2007

    161 plants

  • DiOhio

    Diohio

    joined 12 Mar, 2008

    233 plants

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    Joclark

    joined 12 Apr, 2008

    163 plants

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    Gardener15

    joined 15 May, 2007

    4 plants

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    Grammazoo

    joined 12 Feb, 2008

    195 plants

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    Kieran

    joined 9 Jun, 2008

    3 plants

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    Asyaver

    joined 10 Jun, 2008

    46 plants

Comments:

Grammazoo

Grammazoo

1 Jul, 2008

 

Really love these - they are easy to maintain, cuttings transplant well & they will flower now until frost, the bright white flowers livening up the gardens after all my spring plants have reverted to green...

On photo - Annabelle Hydrangea

MikeC

Mikec

30 Jun, 2008

 

Mine blooms latter too. This one is loaded :)

On photo - Hydrangea blooming

Chrispook

Chrispook

30 Jun, 2008

 

Wow. Mine blooms later than this.

On photo - Hydrangea blooming

LadyEssex1

Ladyessex1

30 Jun, 2008

 

What A Beuty.Jackie x

On photo - Annabelle Hydrangea

MikeC

Mikec

4 Jun, 2008

 

It looks very healthy Janette. It looks about the size of mine when I got it four years ago. You are going to be very excited when you get your first blooms.

On photo - Climbing Hydrenga

Xela

Xela

3 Jun, 2008

 

The wait will be worth it, Janette :-)

Janette

Janette

3 Jun, 2008

 

Cant wait for my little baby Hydrangea to get bigger and flower

AndrewR

Andrewr

6 May, 2008

 

My method is to do what you are doing but also remove about a quarter of the old branches each year. Over four years, all the old wood has been cut out and I start the cycle again.

On question - hydrangea bush pruning

spritzhenry

Spritzhenry

6 May, 2008

 

You are right not to cut it back before the winter. It's best to leave the old flower heads on to give some protection to the developing buds. In the spring, you should cut each stem back to a pair of good healthy buds. So he is right in a way. With your method, it would get rather straggly and too big.

On question - hydrangea bush pruning

Sid

Sid

29 Apr, 2008

 

This sounds like a common problem wtih hydrangeas - that is frost damage to the new leaves. Don't worry, it will sort itself out.

Wyeboy

Wyeboy

26 Apr, 2008

 

Cut off DEAD growth to nearest bud.

On question - hydrangeas

Lori

Lori

14 Apr, 2008

 

If it is powdery mildew you can spray with a baking soda suspension... just dissolve a half tsp of baking soda in a quart of water and spritz it on...get as good coverage as you can, if it is powdery mildew it should succumb.

On question - hydrangea leaves

bonkersbon

Bonkersbon

13 Apr, 2008

 

We ve had a long wet and cold season and can count on one hand the fine days we ve had since Christmas.My guess with no pic would be powdery mildew.Whatever the cause would prune hard back to buds not leaf so that all leaf growth removed in the hope that new leaves not affected as they develop.

On question - hydrangea leaves

spritzhenry

Spritzhenry

4 Apr, 2008

 

I am not sure but think I read that the potted Hydrangeas have been treated in some way to keep them compact, and when they are planted out they revert to their normal size eventually. I should wait until the cold snap is over then plant it - treat it as you would an ordinary one, i.e. cut back to healthy buds in spring. Leave the dead flower heads on until spring as they protect the new buds. Maybe a feed of fish, blood and bone would get it off to a good start in the ground.

flcrazy

Flcrazy

24 Mar, 2008

 

Love the way you mixed the lacy thin foliage of the ferns with the large round leaf of the hydrangea. Opposites really do look great together.!

flcrazy

Flcrazy

24 Mar, 2008

 

Fantastic shot ! I've never seen one of these before. I'm glad he's small, kinda scarey looking dude..lol

Lori

Lori

23 Mar, 2008

 

Great-- Thanks, Di.

Lori

Lori

23 Mar, 2008

 

Your pictures are wonderful. Beautiful and edifying...

DiOhio

Diohio

23 Mar, 2008

 

Thanks Lori, I have a hydrangea climber and it's VERY slow growing. I'm not sure if that's true for all of them. It's Schizophragama hydrangeoides "Moonlight" or "Moonhigh".......I'm not sure I couldn't read the tag very well. I bought it 6-14-02 at a local greenhouse and it didn't even start to climb until 2004. It still hasn't bloomed but it is climing higher each year.

Lori

Lori

23 Mar, 2008

 

Yes! There she is...this is what my Annabelle looks like. Really, really want a climber to plant with Amelopsis brevipedunculata 'elegans'.

Lori

Lori

23 Mar, 2008

 

Mopheads? lol... love it. My Annabelle hasn't reverted, she's her same mophead-self as when I planted her three years ago. I have two of her progeny and they seem to take after her... thanks for the interesting detail.

Lori

Lori

23 Mar, 2008

 

I'm a fan of Hydrangeas...and this lacecap is just what I'm looking for.
Is this a climber or is it a shrub like Annabelle? Oops learn to read, lori.
arborescens...tree. ok. sorry. I'm looking for the climber for my trellis if spring ever arrives here. Enjoy your posts.

maple

Maple

17 Aug, 2007

 

Votre lavande est trés jolie n'est pas?

peter

Peter

27 Jul, 2007

 

Just watched Gardener's World (all about colour). I think the yellow looks great here!