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Post by keith on Jan 8, 2019 5:11:48 GMT
Your help would be greatly appreciated. Keith This happened very quickly, it's the only Dahlia in a bed of many. If necessary I am prepared to dig it out and put it in the rubbish bin. This is the Dahlia garden area
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Post by jellibeans on Jan 8, 2019 8:52:36 GMT
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Post by SueA on Jan 8, 2019 9:00:40 GMT
I'm not very knowledgeable on dahlias either but in general I would look to see if there are any tiny insects on the back of the leaves (capsid bugs/thrips/spider mites) which could be sucking the sap & causing the marks or it could be some sort of virus but hopefully one of our dahlia growers will be able to help.
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Post by jellibeans on Jan 8, 2019 9:07:49 GMT
Agree, when I quickly read through another article they showed a similar leaf and suggested red spider mites on the underside of them. Have a look and let us know
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Post by keith on Jan 9, 2019 0:46:26 GMT
Now this is even stranger, all I did was give the plant a good feed of a Complete Fert yesterday. Either late last night or before sunrise we had a good rain This morning no markings on any leaves, if any thing they look crinkly as if a piece of paper was crushed up then opened. There are a few chew holes, no red spider or any on the plant at all. I will give it a weak liquid fert and check it several times during the day and just before I go to bed and very early in the morning just after sunrise. The plot thickens. Keith
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Post by SueA on Jan 9, 2019 8:52:57 GMT
Well that sounds promising keith, I'd just see how it goes then.
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Post by keith on Jan 10, 2019 5:16:54 GMT
I meant to add that night we had a good steady rain it could have cleaned the leaves. There are a few holes in the leaf ?? I am thinking "Ear Wigs" something is digging under the old retaining wall looking for food.
Keith
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Post by SueA on Jan 10, 2019 8:19:39 GMT
It could be earwigs keith, I don't seem to get them in our garden but I know they like dahlias & some people put a small plant pot stuffed with straw upside down on the top of the cane supporting the plant & apparently the earwigs hide in there during the day & you can collect & dispose of them.
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Post by keith on Jan 11, 2019 1:02:41 GMT
Sue
That sounds like a very basic trap and it will do the job.
Keith
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Post by lesley on Jan 11, 2019 18:26:27 GMT
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Post by keith on Jan 12, 2019 4:19:35 GMT
Lesley
Thank you very much for that useful information. I have already printed a copy.
Keith
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