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#1
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Dark purple blotches...
.... on the leaves of a relatively new Photinia Fraseri Pink Marble. Is
this likely to be just frost damage? The damage is not evident on other basic Red Robin Photinias in other parts of the garden but I wondered if this variegated version was more susceptible to frost. -- rbel |
#2
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Dark purple blotches...
On 2013-04-12 19:31:11 +0100, rbel said:
... on the leaves of a relatively new Photinia Fraseri Pink Marble. Is this likely to be just frost damage? The damage is not evident on other basic Red Robin Photinias in other parts of the garden but I wondered if this variegated version was more susceptible to frost. No idea why I am asking this but could it be water drips? -- Sacha www.hillhousenursery.com South Devon www.helpforheroes.org.uk |
#3
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Dark purple blotches...
On Fri, 12 Apr 2013 22:42:51 +0100, Sacha wrote:
On 2013-04-12 19:31:11 +0100, rbel said: ... on the leaves of a relatively new Photinia Fraseri Pink Marble. Is this likely to be just frost damage? The damage is not evident on other basic Red Robin Photinias in other parts of the garden but I wondered if this variegated version was more susceptible to frost. No idea why I am asking this but could it be water drips? Unlikely as it has been in a sheltered, partially covered area throughout the winter (ready for planting out this spring if and when it arrives). I was concerned that, in the event that it is not something like frost damage it could be diseased. -- rbel |
#4
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Dark purple blotches...
On Sat, 13 Apr 2013 12:29:24 +0100, Chris Hogg wrote:
On Sat, 13 Apr 2013 11:06:22 +0100, rbel wrote: On Fri, 12 Apr 2013 22:42:51 +0100, Sacha wrote: On 2013-04-12 19:31:11 +0100, rbel said: ... on the leaves of a relatively new Photinia Fraseri Pink Marble. Is this likely to be just frost damage? The damage is not evident on other basic Red Robin Photinias in other parts of the garden but I wondered if this variegated version was more susceptible to frost. No idea why I am asking this but could it be water drips? Unlikely as it has been in a sheltered, partially covered area throughout the winter (ready for planting out this spring if and when it arrives). I was concerned that, in the event that it is not something like frost damage it could be diseased. Something like Black Spot on roses perhaps? That is what I was concerned about - I think that I will give it a squirt with some fungicide to be on the safe side. -- rbel |
#5
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Dark purple blotches...
On Sat, 13 Apr 2013 17:35:36 +0100, rbel wrote:
That is what I was concerned about - I think that I will give it a squirt with some fungicide to be on the safe side. I actually have a little one of these planted last fall, I had it in the pot for a while before. Mine has the blotches too. My experience with photinia is that (in general) they're pretty frost hardy. I don't have enough experience with Pink Marble to know whether it's more tender. However a lot do seem to suffer from black spot, which seems very similar to pyracantha scab. The problem with photinia is because the leaves are waxy the fungicide has a hard time "getting in", so multiple treatments appear to be called for... HTH. -- Gardening in Lower Normandy |
#6
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Dark purple blotches...
On 13/04/2013 22:04, Emery Davis wrote:
On Sat, 13 Apr 2013 17:35:36 +0100, rbel wrote: That is what I was concerned about - I think that I will give it a squirt with some fungicide to be on the safe side. I actually have a little one of these planted last fall, I had it in the pot for a while before. Mine has the blotches too. My experience with photinia is that (in general) they're pretty frost hardy. I don't have enough experience with Pink Marble to know whether it's more tender. However a lot do seem to suffer from black spot, which seems very similar to pyracantha scab. The problem with photinia is because the leaves are waxy the fungicide has a hard time "getting in", so multiple treatments appear to be called for... HTH. Try adding a drop or two of detergent to your spray mix. |
#7
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Dark purple blotches...
On Sun, 14 Apr 2013 08:47:40 +0100, David Hill
wrote: On 13/04/2013 22:04, Emery Davis wrote: On Sat, 13 Apr 2013 17:35:36 +0100, rbel wrote: That is what I was concerned about - I think that I will give it a squirt with some fungicide to be on the safe side. I actually have a little one of these planted last fall, I had it in the pot for a while before. Mine has the blotches too. My experience with photinia is that (in general) they're pretty frost hardy. I don't have enough experience with Pink Marble to know whether it's more tender. However a lot do seem to suffer from black spot, which seems very similar to pyracantha scab. The problem with photinia is because the leaves are waxy the fungicide has a hard time "getting in", so multiple treatments appear to be called for... HTH. Try adding a drop or two of detergent to your spray mix. I have added some form of wetting agent to garden sprays for many years but I agree that it would be even more important to add it to the spray where the leaves have an inbuilt barrier as Emery describes. I have been using Ecover liquid as a surfactant on the probably unfounded basis that it is likely to do less damage than the Fairy stuff -- rbel |
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