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jweingarden

Pruning small-variety paniculata hydnrangeas

8 years ago

I know some of the bigger Paniculata Hydrangeas take well to pruning to tree form, such as Limelights, Unique, Tardiva, Vanilla Strawberry, PG... While it is more common to see the smaller varieties in bush-form, I've heard they can be pruned to be (at least more-so) tree-like.


I'm not interested in pruning my paniculata hydrangeas into tree-form, but I am considering styling them into multi-trunk plants. It seems to be common on older plants - I see it a lot in older neighborhoods in Pittsburgh, and I've heard people call them "heritage" in the North East.


I have a Bobo, Strawberry Sunday and Little Lime. The Little Lime seems like it could be amenable to a tree or multi-trunk shape, but I'm wondering if the Bobo and Strawberry Sunday have too much of a bush-like habit? Last year, I removed some of the thinner low branches, but particularly on the Bobo, they re-grew this spring before I even saw signs of green on the upper branches.


Anyone have any experience with other styles than bush-like with small varieties of paniculata hydrangeas?


Some references:

https://shop.arborday.org/data/default/images/catalog/600/Turnkey/1/Pee-Gee-Hydrangea_1-1006.jpg

https://www.greensupply.be/images/portfolio/7/Hydrangea%20paniculata%20Grandiflora_200plusextra.JPG

http://everchanginggarden.ca/wp-content/uploads/2011/11/hydrangea-pee-gee-201007.jpg

http://everchanginggarden.ca/wp-content/uploads/2011/11/hydrangea-pee-gee-201007.jpg

https://uconnladybug.files.wordpress.com/2010/04/hydrangea_paniculata_grandiflora_klr.jpg

Comments (17)

  • 8 years ago
    last modified: 8 years ago

    Not with paniculatas but with a mophead. That tendency to growth new stems is what hydrangeas do when, ha!, a spouse accidentally mows or cuts over hydrangeas... ;o))

    After a few seasons of doing this 'growing of new stems' and you 'cutting them off', hydrangeas reduce this new growth somewhat but it does not go away. Similar to what happens if you convert a Crape Myrtle from a bush to tree-form.

    The same thing happens when you try to convert paniculatas to tree form. Select one or a handful of trunks and cut the rest. And every year, cut anything else that tries to regrow.

    You just have to keep the pruners handy and use them as needed in Spring. Also, keep thinning leaves that may tend to grow lower down the trunks.

    Annabelle probably does not "do" tree form. From an aesthethic point of view at least. Besides, the stems are normally not strong enough for that... which is why I considered that project once but chose not to do it.

  • 8 years ago

    Thanks Luis - always good hydrangea knowledge!

    Ok, so maybe I will keep at it. I didn't do a second pruning in the spring, mostly because it is the first year these are in the ground, and especially on the Bobo, no buds swelled higher up the plant until later in the season.

    I don't want to remove flowers from the Bobo now, but maybe I will look and see if there is low, inside growth that is just vegetative.

    The paniculatas are mixed in with mopheads and other shrubs. I think selecting a few main trunks and showing them will look nice in contrast to the mopheads that tend to make a mound.

  • 8 years ago

    Today with matching LQF

    Jon thanked hyed
  • 8 years ago

    Ok me again a few other I have pruned to tree form VS & PW last two as or today

  • 8 years ago

    Thanks Hyed,

    I've seen some of these you've posted, and this is the style I'm thinking about. It's not so extreme as the tree-form, where someone's really altered the plant's habit, but it gives the plant some form.

    So you can do this with just about any paniculata, you just have to keep it pruned at the base, especially the first few years?

  • 8 years ago

    PS Hyed,

    does the LQF also bloom as early as the QF? I don't have space for a QF (or LQF really), but I'd like some earlier flowers. The Bobo is flowering, and the mopheads have as well, I also planted some azaleas, clematis and honeysuckle to get some earlier flowering, but the LQF sounds interesting if it actually flowers noticeably sooner than other paniculatas.

  • 8 years ago

    Jon, my LQF are starting to bud now that’s because they new/ young .. my original QF are monster and will have color my the 1st of July....I believe that after a few yrs LQF will bloom at the same time

    Jon thanked hyed
  • 8 years ago

    Good to know! My sister lives in Boston - she called and asked if a Quick Fire is good. I told her that is the best choice for the region.

  • 8 years ago

    Ok but a few pictures of Original QF & Limelight how big they can get ... again I have shown these pictures many times...Sorry

  • 8 years ago
    last modified: 8 years ago

    looks great! She got a tree-for QF. It will take up a good portion of her yard, but... I told her before she bought it, plan for 8-feet.

    I took a few of the "suckers" off my Bobo and Strawberry Sundae. I'll wait until pruning time to remove any more lower/inside growth.

  • 8 years ago

    Hi Hyed -


    How many ~years~ from planting did it take for you to tree form those . Anytime I buy a ~big shrub~ or tree, I say it's worth every $ spent.....someone has had to water and feed the thing to this size..

  • 8 years ago

    a fan, the LLs & QF are about 12 yrs .I used pruned the LL down to 2’...why they will grow to 9’...now I just remove the old blooms in April same for the QF here is another picture from the deck


  • 8 years ago

    Jon, here is a new Bobo I picked up earlier already in tree form, between two Mathilda Gutges

  • 8 years ago

    Thanks Hyed - that is basically what I am going for. I just think over time, when there are too many trunks, they thicken into a mass. Focusing on a few main ones, I think, looks nice.

  • 8 years ago
    last modified: 8 years ago

    I saw Bobo standards sold at a nursery last week. Never seen a multi trunk Bobo before.

    Next year I would like to trim my Strawbwery Sundaes & Little Lime into multi trunk trees as well.

    Thanks for the photo!

  • 8 years ago
    last modified: 8 years ago

    I have observed the same thing. All the hydrangea standards at plant nurseries are single trunks, not multiple trunks (think Crape Myrtles). I guess the advantage of multi-trunks may be that if one trunk dies, the shrub remains, you still get foliage/blooms from the rest of the trunks (might look weird aesthetically for a few years). Of course, it would be rare for this problem to happen.