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Mycorrhizal Fungus

julia.hall2461julia.hall2461 Posts: 63
in Plants
Can you use Mycorrhizal Fungus on established roses? I’ve looked on-line & general advice is to use at planting stage
Our new garden has many beautiful established roses (previous owner used to show roses we’ve been told) but they’ve been “neglected” for a while. What do people recommend to best feed them? 

Posts

  • Hostafan1Hostafan1 Posts: 34,889
    IMHO I'd only use it on VERY poor soil. 
    I think it's a total waste of money if your soil is decent. 
    I'd certainly not use it as a top dressing. It needs to be in contact with the roots
    Devon.
  • julia.hall2461julia.hall2461 Posts: 63
    Thank you! The roses bloomed beautifully last year so I’m assuming soil decent. The “neglect” I referred to was lack of pruning which has been sorted so hopefully they’ll be even better this year!!! 
  • Hostafan1Hostafan1 Posts: 34,889
    I reckon they'll be fine. 
    Devon.
  • FairygirlFairygirl Posts: 55,117
    edited May 2023
    If you want advice about feeding them, there's a rose thread on the forum @julia.hall2461 where you'll get some help. I'll see if I can find it and do a link.

    The mycorrhizal stuff isn't a feed, or for adding afterwards, as already said. :)


    Here you are - you can either read it all [!] or just ask for assistance
    https://forum.gardenersworld.com/discussion/1071462/roses-spring-summer-2023/p129
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • MrMowMrMow Posts: 160
    No point in adding it,it will already be there and if you use fungices  it will knock it back or destroy it
    I never knew retirement would be so busy. :smile:




  • julia.hall2461julia.hall2461 Posts: 63
    Thankyou Fairy Girl for the link - much appreciated 

  • GardenerSuzeGardenerSuze Posts: 5,692
    You may already have enough naturally occuring fungi in your garden anyway.
    I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
  • Hostafan1Hostafan1 Posts: 34,889
    GardenerSuze said:
    You may already have enough naturally occuring fungi in your garden anyway.
    Almost certainly 
    Devon.
  • bédébédé Posts: 3,095
    edited May 2023
    julia.hall2461 said:
    The roses bloomed beautifully last year so I’m assuming soil decent.
    So why change anything.  If they didn't need extra fertiliser last year, they probably won't need it this year.

    Mycorrhizal Fungus is not just any fungus, but a specialised type of fungus.  Possibly different species for different plant roots.  I have seen it recommended for specific replant disorder (CRD) in roses, but not your issue.  I think it's mainly a marketing gimmick from the plant health industry.


     location: Surrey Hills, England, ex-woodland acidic sand.
    "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
  • julia.hall2461julia.hall2461 Posts: 63
    Thank you everyone for your advice! I’ve only got into gardening since we bought a house for renovation with a sizeable garden - so any advice is appreciated 
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