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Question about growing Dhalias in containers

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Posted by winterminute WA (Zone 8) (My Page) on
Sat, Jul 3, 10 at 16:09

I don't have a great spot to put my Dahlias right now, but stumbled across an article on how to plant Dahlias in containers @ http://www.dahlia.org/index.php?page=growing-dahlias-in-pots. However, I've got some questions I'm hoping you can help me with.

The article talks about planing the tuber 6" below the edge of the container, but only barely covering the tuber with soil. Then adding soil as the plant grows up to the top of the container. So in this picture, the tuber is less than an inch below the surface. However, the Dahlia growth took me by surprise. Within a week I had this much growth:

My question is, should I follow the original directions and cover this growth (stock and leaves) with soil?

And, now would probably be a good time put in a stake.

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RE: Question about growing Dhalias in containers

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  • Posted by jroot 5A Ont. Canada (near (My Page) on
    Tue, Jul 6, 10 at 15:33

I would wait for it to get a bit taller. You can clip off the lower leaves which will force it up. Then as you fill up ( in stages ) the pot, it will develop more roots and tubers where the leaf nodes are. I have a few in pots, but I don't want the soil to get too hot, so I double pot them with a larger pot on the outside, preferably a lighter colour. With the air space between the pots, the inner pot doesn't get so hot. Sometimes, I fill the space with soil as well for extra insulation or ballast in case of winds.

Good luck. Please keep us informed as to your progress, especially in the fall. I am curious to see how many tubers you get.

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