What's Wrong With My Rose?

[Osbourne One-Nil]

It did this last year too...bright, almost flourescent orange spots on the stems and underside of many of the leaves. Doesn't look like rust to me, but I don't know quite what it is.

Sorry about the crappy photos...best I could do at 9.30pm.

[Azores Hi]

It did this last year too...bright, almost flourescent orange spots on the stems and underside of many of the leaves. Doesn't look like rust to me, but I don't know quite what it is.

Sorry about the crappy photos...best I could do at 9.30pm.

looks like a type of scale insect

[Osbourne One-Nil]

Do you advise DDT?

I did wonder about that, but the spots are furry and very irregular size and shape....so I'm not sure.

[Azores Hi]

Do you advise DDT?

I did wonder about that, but the spots are furry and very irregular size and shape....so I'm not sure.

If you can dettch them with a thin blade then it's probably scale. If the spots are more firmly rooted then I would think its fungal. Not sure really??

Try a weak washing up liquid solution, scale insects hate it.

[Mark H]

Looks like some form of rust to me.

http://www.harlowcarr.co.uk/Advice/profile...0/rose_rust.asp

[Osbourne One-Nil]

Too big for rust I think, and too bright an orange...but I could be wrong. I'll take some better photos tomorrow.

[cyclonic happiness]

I think it's some sort of Rose gall wasp, not sure which one but they tend not to do alot of damage and can make interesting talking points.

Found a link to a page about galls in gerneral, hope this helps? http://www.hainaultforest.co.uk/5UK%20Galls.htm

[Osbourne One-Nil]

I'm going to get my wasp traps out then. They're like mouse traps, only you use old lolly sticks for bait.

[Osbourne One-Nil]

Here are some better photos taken this morning.

So the little flecks look a bit like rust, but they're powdery and dusty...like the big specks, which look nothing like rust to me.

Here's a bit on the stalk...

...and here it is sliced in to - no sign of any animal - straight into the stem.

[Osbourne One-Nil]

I think I've solved the problem, and ten house points to those that were saying rust.

It does appear to be a type of rust - http://images.google.co.uk/imgres?imgurl=h...sa%3DN%26um%3D1.

I shall get my Rose Hammerite out.

[acbrixton]

Try a weak washing up liquid solution, scale insects hate it.

Iwas intrigued to see in a gardening magazine recently a warning to the effect that under EU regulations relating to garden pesticides, the use of dilute washing up liquid as a garden pesticide is unlawful as it has not been specifically approved for that purpose!

God preserve us.

regards

ACB

[stormchaser1]

Morning OON

check out the link below , looks like some kind of disease called Rose Rust

http://www.rhs.org.uk/advicesearch/Profile.aspx?pid=269

[peterf]

i agree defo rust.if the outbreak is on a small scale try smothering the putsules with a dab of vaseline.

good hygeine is the key to prevention.make sure you clear all plant debris after leaf fall.

it's not really one of the worst diseases to affect roses.

[Azores Hi]

Iwas intrigued to see in a gardening magazine recently a warning to the effect that under EU regulations relating to garden pesticides, the use of dilute washing up liquid as a garden pesticide is unlawful as it has not been specifically approved for that purpose!

God preserve us.

regards

ACB

This is correct to a degree, but it would be at the growers risk rather than unlawful. It would be unlawful for a washing up liquid manufacturer to claim a pesticidal action.