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Why are these Ash struggling?

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  • Sam76Sam76 Posts: 151

  • DovefromaboveDovefromabove Posts: 88,147
    edited August 2023
    Are we talking about Fraxineus excelsior or Sorbus aucuparia now? 

     I thought the OP had 40
    of the former with symptoms which could be Ash Dieback (Hymenoscyphus fraxineus formerly known as Chalara fraxinea) … 

    What Rowans  are we talking about, and are there photos of them so we can compare their symptoms with those of the Fraxineus excelsior ? 

    😵‍💫



    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.





  • Sam76Sam76 Posts: 151
    birch & rowan also showing signs of browning leaves
  • DovefromaboveDovefromabove Posts: 88,147
    edited August 2023
    Can I suggest that autumn might have something to do with those colouring  leaves on the birches and rowans. 

    The leaves on the ash look much more as if they’ve been affected by Dieback … when autumn hits ash tree leaves they turn yellow then fall. They don’t turn grey and shrivel as if they’ve been hit with a flame gun … that’s what saplings with Dieback look like.  See photos here

    https://phys.org/news/2018-12-analysis-mortality-fungal-infections-ash.html


    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.





  • FairygirlFairygirl Posts: 55,117
    What's the plastic thing at the bottom?
    You need to clear a proper space around them, so that they aren't competing with grass and weeds. If they haven't had enough water, they'll change to autumn colouring sooner than normal due to stress. They'll take any amount of water as long as there's a reasonable amount of drainage. They grow on the top of rocks, among bits of moss etc, up here.  Birches are equally straightforward - they'll take masses of water  :)

    They don't change quite  that early here because of the conditions. The beeches are yellowing and the horse chestnuts, but that's normal. The rowans are usually slightly later. It's only further north that  they're changing by now.
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • Sam76Sam76 Posts: 151
    Homemade tree protectors from cut milk bottles. Protection from the strimmer
  • FairygirlFairygirl Posts: 55,117
    If you just clear away a decent amount of turf, that will be far better. It also means you can mulch after proper watering, and through the seasons, to help with establishment.

    You really can't overwater rowans, so if you're in a drier area, they'd have needed gallons at a time from planting until the weather is more autumnal, especially if the ground drains freely, and they've been recently planted - ie within the last year or so. Birch is pretty much the same. 
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • Sam76Sam76 Posts: 151
    Perfect. Thanks all
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