Sango kaku grows too fast?

Discussion in 'Maples' started by shingo43, Sep 24, 2014.

  1. shingo43

    shingo43 New Member

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    Hi guys

    I bought a few japanese maple trees early this summer and only my sango kaku grows like crazy, it grows much faster than my BG, osakazuki and full moon.

    I attached a picture, the left is from Aug 12 and right is from Sep 18, is it normal for JM to grow in a rate like this? or should I prune to cut back the growth? thanks.
     

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  2. patdero1

    patdero1 Active Member Maple Society

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    Late summer growth is normal no need to prune
     
  3. shingo43

    shingo43 New Member

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    Thank you, I think I might over-fertilized the tree cause it came with some all purpose fertilizer already in the pot and I added some more.
    I heard over grown young tree can be harmful and I'd just want to make sure it can survive the winter.
     
  4. patdero1

    patdero1 Active Member Maple Society

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    Yea japanese maple need very little fertilizer. Fertilize in spring and don't over do it.
    Good luck
    Pat
     
  5. maplesandpaws

    maplesandpaws Active Member

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    Sometimes the trees surprise you. I picked up a small 1g Otome zakura a couple summers ago and up-potted it into a 2g when I got it; by fall, I had to move it up to a 3g since it had gained so much root mass. Didn't really do anything last year, but this year, I have 6 branches that have grown over 3 feet since the beginning of June - and not leggy growth either. My Matthew that I purchased this spring has also done the same thing (in a pot as well), as has my Murakumo and Shinju ( both in the ground). Most of my others have just sat there, with a little extra push here or there.
     
  6. emery

    emery Renowned Contributor Maple Society 10 Years

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    If the growth is very leggy and doesn't have a chance to ripen, you may want to shorten it; Sango kaku in particular tends to lose this growth if the winter or spring is very wet.

    Indeed Andrea I have many maples that need to be repotted in both spring and fall, they put on so much root growth. I have found mycorrhizae really helps the root growth. I guess 3 gallons is about 12 litres, already a pretty big pot; mostly after 12 litres I try to get a plant into the ground.

    My potting progression (usually) is 0.4l, 1l, 3l, 7.5l, 12l. If I have to keep going I do 18l, 35l. But that's a lot of substrate! ;)

    -E
     

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