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South cental Ohio | They spread when you see the white seeds blowing . A healthy dose of 24D will play hell with them. I think the best time to pray them is at "bud stage" but spray them anytime you get to it. I've seen them sprayed at the stage yours are in and they'll go ahead and die while continuing to ripen and spread seed-----so get them sprayed ASAP ! | |
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Thistles
