Major disease problem


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Hello,

I have quite a predicament here. I have well over 100 Dahlia tubers planted in various locations but they are all near each other. This year I built a lot of raised beds and brought in a soil mix to fill them. The dahlias that are grown in the ground or in my old beds that have a different soil mix are growing heathily. Every single dahlia planted in my new raised beds looks horrible. There is stunted growth, yellowing, and very thick Knobily and curled leaves. The sunflowers that I’ve grown from seed that are supposed to be 6 feet or taller are now blooming at only 2 feet and have the same thick curled leaves. The cosmos, yarrow and tomatoes are affected as well. Neighboring dahlias close to the raised beds but in the ground do not have any problems. Any guesses at what’s going on here? What would you do in my situation?
I fertilized the dahlias once with Foxfarm big bloom liquid fertilizer. No pesticides, no herbicides. I water deeply once to twice a week depending on the weather. Recent temps here have been in the 90’s. I am in zone 5b. I checked with the landscaping company that I bought my soil from and they assured me that they use no herbicides. I thought perhaps I was dealing with beat curly top virus but as you will see in one of the pictures attached my beet greens look fine. Help!
 

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Expand on this "brought in soil mix" thing? Did you bring in multiple components and mix them yourself for example? It looks like a residual or old weakened chemical stressor to me but I have a habit of jumping on killer compost as a knee jerk reaction.
 
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I checked with the landscaping company that I bought my soil from and they assured me that they use no herbicides
"Well, something is up with your soil, everywhere I used it things are dying, everywhere else things are fine, come and have a look, surely I am not your only customer, has no-one else complained? I am not looking to blame, just to find out what is happening, and it is only happening in the soil you provided, doesn't that concern you?"
The idea is to get them concerned and helping to find out what it is, not lay blame or get compensation

Really, the people who provided it should be concerned for their reputation. The only thing other than the soil that I can think of is 'What are the raised beds made of?' Someone didn't think 'I'll make them last' and paint the insides with creosote? Or put in a floor of something poisonous to stop weeds getting in?
 

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