Soil for Dahlias

ifraser25(z11 Brazil)December 25, 2011

I really struggle with Dahlias despite the fact that our climate is good for them. Could it be the soil? It is basically red clay and hardens quickly after rain.

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oscarthecat(z7MD)

I believe if I were you I would dig in lots of compost. Steve in Baltimore County

    Bookmark   December 25, 2011 at 10:13PM
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HighlanderNorth

We too have a problem with clay based soil throughout our entire region. I just dug up ALL the clay from the holes I was going to plant any and all of my plants into, including my vegetables, flowers, etc. I threw almost all of the native clay that I dug from the holes elsewhere. Then I made a mixture of soil using bagged topsoil of good quality, plus some peat moss, some Southeastern Pa. mushroom compost and some tree leaf compost. I ended up with a mixture that was about 80% organic and 20% topsoil. That worked well for me.

I made sure that the soil I made wasn't too fine in consistency, and the bagged soil that I used was somewhat coarse, and so was the mushroom compost. That way it drains pretty well, but with the 30% or so of peat moss, it held some moisture.

Then I had to fertilize too later on.

    Bookmark   December 29, 2011 at 6:34PM
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pdshop(5)

That sounds like whaat I have to do and it is very hard digging into that soil.

    Bookmark   February 6, 2012 at 8:11PM
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