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Growth on my dog roses �.

Posted by Tuderte 9 (My Page) on
Sun, Aug 10, 14 at 4:54

Can anyone please help me identify this growth?

I was checking my hedgerow yesterday and I noticed that several of the dog roses have these very strange growths on them - perhaps it was also on one of the hawthorns - I've never seen it before and have no idea what it could be.

My instinct is to cut them all off and burn them but maybe it's a home for some sort of beneficial insect? Does anyone know?

Cheers
Tricia


Follow-Up Postings:

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RE: Growth on my dog roses �.

It's neither beneficial nor harmful. It's caused by the Mossy-rose gall wasp, also called Robin's pincushion gall and bedeguar gall, scientific name Diplopepis rosae.

The Swedish name is "sömntorn", sleep thorn in translation, because it was believed in old lore in to give sound sleep if one slept with a gall under the pillow.


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RE: Growth on my dog roses �.

Thank you mariannese - at least I don't have to rush out and cut them all off!

Tricia


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RE: Growth on my dog roses �.

I have had these on my R. canina in Tennessee and they did not strengthen the bush. It might be just my conditions, but after the first year, when I thought I had destroyed all of them, more came back and the third year the rose died.

I can't think of anyone within fifty miles of me who grows the old roses that these mossy rose galls seem to prefer, and suddenly they appeared on a five year old canina.

Still puzzling that one.


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RE: Growth on my dog roses �.

Hi anntn6b,

thank you for letting me know that - my R. canina (which form part of a hedgerow along with blackthorn, hawthorn and firethorn) were all planted in January 2012, so I think I will cut them all off and bag them and then burn them. They're only on half a dozen plants at this stage (that I noticed) - tomorrow I'll have a closer look and take a bag and my pruners with me when I do my 'inspection'.

Tricia


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