Dahlia virus?

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Posted by pdshop 5 (My Page) on

Mon, Aug 16, 10 at 14:42

I had wonderful green leaves this year until last week. The leaves on some of my dahlias are mottled with yellow. I don't have white fly, I don't have spider mite (although I sprayed for them last night) and I haven't seen any strange bugs around. I am trying to keep the watering steady as we have only had rain twice this summer and for a very short time. We have humid, hot days with some drying at times. If it is dahlia virus, could someone tell me how to treat it?

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RE: Dahlia virus?

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Posted by oscarthecat z7MD (My Page) on
Mon, Aug 16, 10 at 15:57

Sorry PD if it is virus no cure. Steve S.

RE: Dahlia virus?

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Posted by pdshop 5 (My Page) on
Mon, Aug 16, 10 at 18:16

Bummer! I will let you know. I was wondering if I should plant something else in those raised beds next year. I know you have to rotate crops. Or, change out all the soil?

RE: Dahlia virus?

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Posted by oscarthecat z7MD (My Page) on
Tue, Aug 17, 10 at 6:59

pd THE BAD NEWS IS YOU MUST DISCARD ALL TUBERS THAT SHOW VIRUS. As you dig each of those tubers mix i cup Clorox to 1 gal water and pour in the hole. Don't think this really does much good but will make you feel better about it. Steve S.

RE: Dahlia virus?

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Posted by pdshop 5 (My Page) on
Tue, Aug 17, 10 at 12:08

How can I be sure it is a virus? I had used a mulching product this year called Mainely Mulch. It is straw and hay chopped up, sanitized and than compressed into a bale that covers alot but is not heavy. Have any of you heard of it? Could that be my problem? I will indeed discard the tubers this year and also cover my soil with a tarp to try and sanitize it. Any ideas on how to sanitize the soil other than what I mentioned? It doesn't seem to bother the flowers but I hate looking at it after sooo much work!

RE: Dahlia virus?

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Posted by oscarthecat z7MD (My Page) on
Tue, Aug 17, 10 at 14:52

PD, I think you will find most virus spread by insects. Steve S.

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