We noticed this orange stuff on some of the Rock Roses at Killinallan and were worried it was a parasite. It was difficult to tell whether the flowers affected were worse off than the unaffected ones - no noticeable signs (to the non-expert!) Any ideas?
Becky
You'll find a copy of the "Naturalists' Handbook - Plant galls" by Redfern & Askew in the library in the Centre. Try that.
ReplyDeleteMalcolm
It looks like Scots Burnet Rose rust, Phragmidium rosae-pimpinellifoliae,which forms these orange gall-like things. See http://www.bladmineerders.nl/gallen/gallenlijst.htm for a nice picture - scroll down the index till you get to Rosa and click on the name of the Phragmidium. Robert Mill, Edinburgh (see you in July Becky)
ReplyDeleteThanks Robert. Yes, looking forward to it. Maybe join us on a ramble? Becky
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