Forum home› Problem solving
This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.

Black walnut, juglone

echo2echo2 Posts: 5
in Problem solving
Hi does anyone know which has the best juglone tolerance as I would like to plant a hedge near a black walnut.
Beech, hornbeam, hawthorn or hazel?

thankyou I'm looking at the online lists but cant seem to find the info I need. 
Many thanks and Happy New Year

Posts

  • BorderlineBorderline Posts: 4,700
    You don't mention how close/far you plan to plant this hedge. I would try and avoid planting nearer than 40 feet from the area. Based on your list, I would think that Hawthorn would be fine. They are tough shrubs/trees once established. Beech might be worth a try if the soil is not too waterlogged over the winter time. Others may have more personal experience on this.
  • echo2echo2 Posts: 5
    Thankyou, unfortunately I have to plant very close to it, I didn't realise it was there initially as I have a 5ft no mans land area between properties which used to be an old footpath. The black walnut was hidden in there cut down but still shooting new growth. I lost all my newly planted laurels before I realised it was there! The soil is clay so I'm drawn towards hawthorn or hornbeam now but the juglone tolerance is the one I'm not so sure of.......
  • DovefromaboveDovefromabove Posts: 88,147
    Thinking back to the two walnut trees that have figured large in my life, hedging plants that grew well close by were a wild damson that we called Blackjacks (so sloe, bullace, damson type of thing) and hawthorn. 

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





  • RubytooRubytoo Posts: 1,630
    edited January 2021
    Thanks for posting about Walnut trees and the problems you have.
    I had heard of some kind of problem but not really read about it until today.
    Allelopathic .
    I ended up going down a rabbit hole, as you do :D

    This link is to a university article. and has a list of trees, plants, and more importantly to you, shrubs. Written by a professor of Horticulture Jim Sellmer  PH.D.  So one would hope a good reliable source.
    https://extension.psu.edu/landscaping-and-gardening-around-walnuts-and-other-juglone-producing-plants

    I got to the above link which came from this one below.
    https://www.gardenfundamentals.com/growing-under-walnut-trees/

    Which came from this one. Not expecting anyone to read them all, but I found it interesting.
    https://morningchores.com/allelopathic-plants/

    Good Luck with your hedging choice.



  • echo2echo2 Posts: 5
    Thankyou ever so much it is a minefield. I've had so many problems with this 'hidden antagonist!' Luckily most things were fine when I relocated them, but the laurel just couldn't cope and totally died before I realised.
     I've decided on hawthorn, I love the shrub and the added bonus of food for wildlife and nectar for the insects is just great.... maybe it was just meant to be!
    Thanks again.

    Happy New Year :)
Sign In or Register to comment.