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When is best time to lift Dalhlias and begonias

my dahlias and begonias are still flowering but as weather is changing was thinking I should take them up for winter, should I wait for first frost

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  • AnniDAnniD Posts: 9,561

    With dahlias, I usually wait until the foliage has gone black after they've been frosted. I've already lifted begonias, I usually do this when the days get shorter and chillier. 

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