New Leaves Dying on Red Maple

Discussion in 'Maples' started by Maple Sydney, Feb 18, 2008.

  1. Maple Sydney

    Maple Sydney Member

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    I've had an acer rubrum Red Maple for 3 months in a pot which has been growing vigorously. The growth during spring and early summer has been so vigorous that I've had to trim the tree regularly.

    Now in late summer I've noticed new leaves are sprouting quickly but they've also quickly curl down and die. They are light green in colour which were in contrast to the usual red which then turn to green.

    Is it some kind of fungal infestation? Some weeks ago I noticed some fungus on the soil surface which I just pulled and threw away. I then added a very thin layer of new soil on top and I haven't seen the fungus since.

    The weather has not been hot for a long time here in Sydney, in fact it has rained a lot. I also water the tree daily.
     
  2. Ron B

    Ron B Paragon of Plants 10 Years

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    May be bothered by mineral salts in irrigation water there or hot weather. If you've been heading it back repeatedly (not a good idea, as it is likely to result in a twiggy specimen with excessive forking) you may have forced it to make out-of-season secondary shoots which can't take the weather you may be having now. Or, it has picked up a bacterial or fungal infestation that is affecting the recent sprouts.

    Instead of cutting it back, move it on to a bigger pot or a place in the ground.
     
  3. Maple Sydney

    Maple Sydney Member

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    Thanks Ron.

    I think your first explanation may be the answer as if it is a fungal/bacterial infestation, the old leaves would be affected too (although I might be wrong).

    So far no old leaves has curled down and dropped.

    I can't move it to a bigger pot or to the ground since I live in an apartment. So from now I'll just let the tree alone and only trim after all the leaves drop in autumn.
     
  4. alex66

    alex66 Rising Contributor Maple Society 10 Years

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    maybe you have "oziorinco "in the pot ,or small animals ex. mouse use your pot like WC ...
     
  5. Ron B

    Ron B Paragon of Plants 10 Years

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    Try pruning roots each year as with bonsai.
     

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