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5 messages
23/01/2014 at 15:35

Last year I planted two dahlia tubers, one of which was snapped and broken and the other which was perfect. In the end, the opposite of what I expected happened - The broken tuber grew into a lovely flowering bush whilst the 'good' one never appeared at all.

I recently turned the soil before planting new bulbs and there was absolutely no trace of the tuber that never grew. I cut back the one that grew to a stalk, currently have it in an old shoe box and am looking for a new spot to plant it, but what happened to the other one? The soil was never disturbed, so nothing dug it up. Did it just rot away into nothing? Why would a perfectly good tuber just disappear like that? Both spots got the same water and light.

23/01/2014 at 15:38

I tend to think it rotted. Keep a check on the one you have left to make sure it isn't rotting. Mine are in the shed, stalk down, and I check periodically that they are firm and dry.

23/01/2014 at 17:57

Dahlias can and do rot over winter.  Prob a slug was dining well on an already rotting dahlia.  

23/01/2014 at 18:35

I had three in my garden and the only one that is still alive is the one that I never lifted. Quite surprised it has survived these two last winters in the ground. This year it never flowered due to the constant slug attacks.

24/01/2014 at 16:48

Yes dahlias often rot in wet ground, so it's often advisable to lift them in the autumn and keep the tubers in a cool dry place over the winter, like a shed or garage.

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