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Acer leaves

Hi i have had this acer for over 10 years and repotted 2 years ago in John inns no 2.

I have noticed browning to the leaves.  

Can anyone help?image

Last edited: 02 May 2017 13:32:05



  • Ladybird4Ladybird4 Posts: 36,842

    It looks like sun scorch. Acers prefer an acidic soil so John Innes 2 might have needed to have some ericaceous compost mixed into it. Top dress with some ericaceous compost and gently mix it with the top layer of soil in the pot. Water it with Sequestrene to give it a boost.

    Cacoethes: An irresistible urge to do something inadvisable
  • Thank you Ladybird for your response. I was told JI no2 was the best soil for acers. 

    Never mind I will do as you say if it will help. Never heard of sequestrine but will ask at garden center. 

    It has been in the same position for many years so over exposure to sun is suprising. Esp in spring. 

    Thanks again

  • We have had some cold nights which might of caught the tender new leaves, if this is the case just leave it and it will grow more leaves.

    plants in pots always need a feed especially this time of year.

  • Ladybird4Ladybird4 Posts: 36,842

    kirk that is absolutely perfect for feeding your Acer but it won't acidify the soil. John Innes 2 IS excellent for plants in pots because it is soil based and gives good weight to prevent them blowing over, but it isn't quite acidic enough for Acers. I'd still get a small bag of ericaceous compost and add it to the pot.

    Cacoethes: An irresistible urge to do something inadvisable
  • autumngloryautumnglory Posts: 255

    Does it get morning sun? We've had some frosty nights recently, acers don't like morning sun melting the frost quickly. It's likely to be sun scorch or frost damage or both. It doesn't look too badly damage, I'm sure it will recover.

  • Guys that is so helpful. Thank you very much. I would hate to loose it after so long. 

    While I have your attention...  I have noticed it is leafing less than it used to and there are many dead branches only 2 to 5mm in diameter. 

    I do top dress it with JI no 2 every year but could this be a sign of it struggling with lack of nutrients and/or poor acid level?  Sort of makes sense. 

    Last edited: 02 May 2017 18:01:12

  • autumngloryautumnglory Posts: 255

    I've just noticed you repotted it 2 years ago, sorry! I'd feed it with what you have for now, cut the dead bits out and top dress with ericaceous compost. I'd repot it again in autumn. 

    Acers do tend to get a bit of dieback anyway, but make sure it's not under or over watered.

    Last edited: 02 May 2017 18:15:05

  • Ladybird4Ladybird4 Posts: 36,842

    I second autumnglory's advice kirk.

    Cacoethes: An irresistible urge to do something inadvisable
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