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susanb

Gardening - bright red growths like starfish on some leaves

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I was just looking at one of my old roses and it has some bright red growths on one of the leaves looking like star-fish or anemones. They spike out on both sides of the leaf and look very peculiar (a bit like something out of Mario Galaxy on the Wii...if that helps!).

 

I have never seen anything like it and wonder if anyone else has any ideas if it is good or bad or poisonous etc.

 

thanks

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thanks - but nope, not rose-hips.

 

smaller and spiky like coral or anemones or almost like spiky urchins. They go "through" the leaf - as much on the back as on the front. No "body" to them - just all the spikes coming out.

 

and a really pretty bright red/pink.

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They should not be there. There is only one leaf on the plant that has them....it has 4. I think it is probably a fungus and so I plan to cut off the leaf and throw it away. But if it is a really bad fungus then I'd like to do the necessary so it does not spread to my other plants (even if that means digging up this one plant - a wild white rose).

 

My mother-in-law (who is visiting this week) thinks it looks very pretty and that I should keep it! :wink:

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ah-ha...my husband has helpfully found the answer.....

 

its a plant gall caused by a parastic wasp....they lay their eggs and then these growths are to provide shelter and food for the grubs. Sometimes known as "robins pincushion".

 

Having already had to deal with 2 wasps nests this summer - I think I will be squashing the leaf tomorrow!!

 

if you are interested: http://www.bugsandweeds.co.uk/galls%20p1.html#RobsPin

 

thanks, all

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