Robinia problem

[Lee Winger]

Royal Horticultural Society - Gardening Advice: Robinia 'Frisia' problems

[Andy Collins]

Thanks Lee, useful info:001_cool:

[Amelanchier]

We did have a Tree Damage Note issued by the AAIS last year sometime that indicated much the same thing i.e., symptoms consistent with a vascular wilt possibly exacerbated by a hot summer.

 

I'd suspect that there might be some genetic predisposing factors here as its only the 'Frisia' variant that is affected.

 

I wouldn't get your hopes up on the causal factor being discovered anytime soon either - I doubt Forest Research (the bods with the big money and kit) are that bothered by such a niche disorder on amenity trees...

 

As for control measures - vascular dysfunction leads to tissue death so no amount of pruning is going to help IMO. Pollarding might be an option or failing that remove and replace with Gleditsia triacanthos 'Sunburst', a similar but far superior tree in every way.

[David Riding]

25 - 30 just in my village are done for, removing 2 in the morning, Local Council and County Council both confirmed it was Vascular Wilt,

[Paul Barton]

Ok, a vascular dysfunction. Thanks chaps.

 

Would be interesting to know why it is only the 'frisia' variety that is suffering but I see what you mean Tony about it being unlikely that the top bods will look in to it.

[raafbeard]

I noticed this last week on nearly every frisia I saw...

[Lee Winger]

Ok, a vascular dysfunction. Thanks chaps.

 

Would be interesting to know why it is only the 'frisia' variety that is suffering but I see what you mean Tony about it being unlikely that the top bods will look in to it.

 

From what I can gather seems it mught be something to do with grafting

[Mozza]

Noticed a few dead/dying ones round my way too recently!!

[Paul Barton]

From what I can gather seems it mught be something to do with grafting

 

Really? That's interesting. Any more details?

[tommer9]

Gleditsia triacanthos[/i] 'Sunburst', a similar but far superior tree in every way.

 

And some lovely timber too. Milled a small one- extremely heavy dense wood with a beautiful colour.