Growing Hydrangeas

file6821308118412-1

We’ve all loved ’em… the ever dreamed about, garden hydrangea. So popular, they are the number one wedding flower after roses. So beloved, few people have no memories of a hydrangea moment…yes, especially us girls… They are romantic, and amazing. Sigh…. The good news is, there is a hydrangea to fit most gardens in most areas of the country. Shade or sun, acid soil or alkaline. Yes, they can be a little finicky. Yes, they are absolutely worth it! Here is the skinny on growing the best hydrangeas, for garden or table. (Or both!)

Although most of us probably think of the old fashioned mophead hydrangea (H. macrophylla)  first, with those amazing balls of bloom in pink or blue,  there are other varieties. Oakleaf hydrangeas grow well in partial shade, and lace cap hydrangeas have a more delicate flower. There is also the more heat tolerant PeeGee hydrangea, H. paniculata. And if that isn’t enough variety, there are now the new reblooming hydrangeas, like “Endless Summer”. First, basic hydrangea care, then we will look at the different varieties so that you can choose the right one for your garden!

Hydrangea Basics

Sun and Shade

Most hydrangeas prefer morning sun and afternoon shade, and don’t deal well with hot climates. Coastal climates are ideal, as are cool summer areas. Both too much heat and too little sun can contribute to poor performance for old fashioned hydrangeas. PeeGee hydrangeas deal much better with heat. Oak leaf hydrangeas are perfect for partial shade areas. No hydrangea will bloom in deep shade.

Water and Fertilizer

Hydrangeas prefer to be evenly moist, and love a fertile spoil. That having been said, when using commercial fertilizers, it’s often advised to use half strength liquid fertilizer so you don’t stimulate too much leaf growth at the expense of the flowers.

Pruning

Most (except re-bloomers) bloom on old wood, so severe pruning is not necessary. Prune away dead wood each spring, and dead head the flowers that are past their prime to promote the most flowers on each bush. PeeGee and Annabelle hydrangeas are more tolerant.

Soil

Hydrangeas prefer soil rich in organic matter. You may have heard that you can change the color of a hydrangeas blooms based on soil composition. It’s true that the pink and blue varieties are influenced by the soil ph. You can change a pink hydrangea to blue by adding aluminum sulfate to the soil to make it more acidic.  It is pretty difficult to change a blue hydrangea to pink…

Problems

The biggest problems hydrangea gardeners have is lack of bloom… This is usually caused by one of three things… a late freeze, using a variety that is not intended for your climate, or pruning too much of the old wood away. KariAnne of Thistlewood Farms has a mantel full of beautiful blooms that convince me she’s found the secret! Check out her advice on getting hydrangeas to bloom.

Growing hydrangeas

 Varieties

Mopheads – Hydrangea macrophylla. Traditional pink or blue hydrangeas. Hate summer heat.

(Photo – Mopheads on right, Lacecaps on left)

blue-hydrangea-7

 

Lacecaps – Hydrangea macrophylla normalis. Lacey and more easily naturalized into the average landscape, these shrubs are less formal, but still amazing specimen plants.

Oakleaf – H. arborescens. Oakleaf hydrangea had oak shaped leaves that turn lovely purple and red in the fall, and conical shaped white flowers that bloom in summer. More tolerant to hot summers, tolerant to shade, and tolerant to drier soil. Wonderful garden plant!

Oakleaf-Hydrangea

 

PeeGee – Hydrangea paniculata. Large conical white to pink blooms, Peegee’s tolerate cold and require several hours of sun a day. They can grow quite large, and are tolerant to pruning, so can be used as a hedge. They also bloom a little later, August and September. They are the only variety that can be pruned into tree form.

79400a

 

Cold zone hydrangeas – Hydrangea arborescens “Annabelle” is a large white flowering variety that blooms and grows well in cold climate zones. Hardy down to zone 3, these flowers can be up to 10 inches across!

63135a

 

Reblooming – Hydrangea macrophylla, the most popular new gaiety of the reblooming mop head is “Endless Summer”. These tend to be smaller shrubs, prefer partial shade, and bloom pink or blue. Reblooming several times over the summer, they are a popular choice for large containers as well.

63142a

It’s worth a little extra effort to learn about growing hydrangeas… they can survive in a garden for generations, and are a beloved flower that every gardener should have the chance to grow.

UPDATE: Just ran across this new hydrangea from Wayside Gardens I just had to share… Hydrangea ‘Next Generation Pistachio’ is a compact grower, just 3-5 feet, loves a shady afternoon, and has an amazing lime green petal edged with pink! Zones 5-9.

30415

Image Credits: Thistlewood Farms, Lee Mays Gardening, Oakland Nursery, White Flower Farms, White Flower Farms, Wayside




Comments

  1. Christine says:

    I’m thinking about “Endless Summer” in blue…

    • Christine, I’ve done the blue for sometime. MAKE SURE the soil ph is correct. If you have to add any additive to get ph where you want it, I always doubled the dose and makes for really brilliant blues. Just be careful not to prune away too much of the bark at years end. It makes for slow bloomers the following year.

  2. Tara Witt says:

    I planted two hydrangea plants this spring. They each a quart size. However, They were rooted cuttings not in soil, given to me from a friend. I live in micHigan (zone 5) and planted them after the May 15th as recommended for our zone. They have not grown at ALL. The leaves look like crap (not dead though) I have them on the east facing side of the house, I water them during dry spats and put coffee grounds around them every day. I only have two possible guesses of what could be wrong: my soil is pure sand or the cuttings still need more time to establish roots. Any advice would be much appreciated!

    • Kathy Woodard says:

      Dig up some of your soil in the area, and squeeze a handful, if it won’t stick at all, its sand and you need organic matter. Do they get afternoon shade? If they are in direct sun they may be struggling with getting their riots established…

    • Check your ph

  3. Pam Chase says:

    I live in Washington State and planted my first hydrangea, which is doing great. What do I need to do to winterize this plant? We normally get snow and can have several days of below zero temps.
    Thank you for advise!
    Pam

    • Kathy Woodard says:

      I would mulch 2-3 inches deep, but keep the mulch a couple inches away from the base, so that it can breathe and you don’t harbor disease/insects close to the trunk… Are you west side? We are east side, they don’t do as well here unfortunately, or I’d have a whole row!

  4. Cristina Bell says:

    I have an old blue flowering hydrangea shrub in my back garden. It used to have the most beautiful blue flowers but this year the flowers were a bit fading in colour. I would like some advice on how to.move this plant, as at the moment its on the ground and I would love to move it into a big pot and griw it there. Any tips please?

    • Kathy Woodard says:

      Like moving any shrub, its a matter of digging up a large portion of the root ball… so it depends on the size of your hydrangea… Usually the root ball is equal in size to the drip line of the plant…

  5. Hi I live in the UK & have quite a few as just love them I have a Blue that’s just has got to big for spot I put it in didn’t expect to grow so fast so was wondering about splitting it in spring
    am a bit worried that it will not flower please is it ok any advice welcome also planning on having every kind of Hydrangea got mop head a climber lace cap & oak leaf have a big rabbit
    problem they eat all plants but don’t with my Hydrangeas glad to say hence my wanting to plant them all

  6. I planted a pink hydrangea about a month ago and all the leaves are turning brown on the edges. I don’t know what I did wrong… they did get quite a bit of rain right after I planted them. It has not been below the upper 40s so I don’t think the cold got them. Any ideas what to do?? Thanks in advance!

  7. Several years ago, I gave my mother a beautiful dark pink hydrangea bush for Mothers Day. Every spring it would come back out but never bloomed again. Mom passed away last year and I dug it up and brought home and it stayed in a pot on my porch all summer. It did better in the pot than in the ground. The leaves were very healthy, and it grew bigger. But, guess what? It never bloomed. Knowing nothing about them, I brought it indoors over winter. Of course, it died. I thought it might come back out this spring, but it didn’t. I don’t even know what my “zone” is. I live in northwest Alabama. What did I do wrong? Thinking of trying another. Thank you in advance for any comments or suggestions. Susan

  8. Kathy
    I have a Hydrangea that i have had for several years. A blue one that grows big and health but for past two years no blooms. It use to bloom its fool self all Spring and until frost. Why no more blooms,
    Thanks Sandy

  9. HELEN Ritter says:

    How do you root hydranga cuttings?

  10. Hi ,
    My mother in law sent me hydrangeas for my daughters second Birthday, it was on July 11th of this year, I potted it in planter with Miraco grow soil and I water it twice a day, it gets morning sun and afternoon shade, but it look like it is dying, It is very very hot in Hope Mills NC ….. I can bring it in side, is there anything that you recommend that I do ? Should I water it more, I am not fantastic with plants , but I do try , and it was so wonderful when had got it. I’m trying to put a garden together with my little girl , of plants and flowers that can live with Horrible Hot weather !! if you have any ideas please let me know !

    • Kathy Woodard says:

      Hydrangeas hate to dry out, and sometimes in really hot weather we need to water planters several times a day… If it is dry a couple inches below the surface, it needs water, no matter when you last watered it… We are having a really hot summer too, hang in there! Butterfly Bush is a shrub that flowers that tolerates the heat better…. Just one suggestion… Any readers in the South have suggestions?

  11. Sherri Crow says:

    Hi Kathy, my grandmother has a beautiful hydrangea in her yard that I would love to have a piece of to start in my yard. What is the best procedure for this.?

  12. We r redoing our backyard, it is a mud pit and also I have never seen so many rock from gravy to big ones and I don’t like that much. And they are in the dirt, so I am having to do small section at a time. I live in Acworth, ga 30101 and I love hydrangeas and not sure which type would be best for us, backyard will have a lot of shade and we will have to get grass that grows well in shade. I do have a spot where morning sun it’s one side , can u give me some help
    Bonnie

    • Kathy Woodard says:

      I might consider Oak Leaf Hydrangea, they are pretty tough and can take some shade… Hope that helps!

  13. Paula Cassidy says:

    I have a climbing Hydrangea for five years. It has full sun and good soil. It has never bloomed! My friend has one with beautiful blooms every year. Can you help.

    • Kathy Woodard says:

      We did a quick little bit of research, and it seems like they usually take a bout 5 years to start blooming, so hopefully you are almost there! We have also heard epsom salts can help, and making sure you are not pruning off any lateral branches… Hope this helps!

  14. Pamela Festa says:

    I have a city line rio hydrangea that is at least 5 yrs old but has never bloomed. Canary one tell me why.

  15. Brittany says:

    I have a dark blue endless summer hydrangea, and live in North Alabama. Ever year it blooms very well, but then a month after it blooms the leaves start to get black spots on them and begin to shrivel up and die. We have tried spraying milk, and anti-fungal that the local Lowe’s suggested but nothing has worked! Any thoughts of what this could be? Thank you in advance for your help.

    • Kathy Woodard says:

      Well we are no experts in Southern gardens, but it sure sounds like a fungus of some kind… Perhaps start spraying the anti fungal early in the season, and spray every 2 weeks all season long so the fungal spores never get a chance to do damage? Sometimes the best place to get help for things like that is your local nursery… NOT a home improvement store… The nursery staff has more specific knowledge about plants. Good luck, we love hydrangeas!

Speak Your Mind

*