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  • TheDon2015 commented on jgrachie's instructable Build a Raised Garden Wicking Bed5 months ago
    Build a Raised Garden Wicking Bed

    Very nicely done and looks great. Nice addition to your yard. I was most interested in this Wicking Bed idea and so read through your instructions in detail. I also really appreciated your references at the beginning that sighted videos and links. After reading the link: Sustainable Gardening Australia by Helen Tuton, it was explained in there about the wicking action.My concern is that you may have a "potential issue" with your bed so please be aware of this, IF you have any issues (hopefully not). The article talked about the research that showed that the maximum depth that the "wicking" works on is 300mm or about 11 3/4 inches. In that top layer of soil it appears to me that you used a 2x12 and 2x6 boards, which is approximately 16 1/2 inches (11 1/4 +5 1/4...see more »Very nicely done and looks great. Nice addition to your yard. I was most interested in this Wicking Bed idea and so read through your instructions in detail. I also really appreciated your references at the beginning that sighted videos and links. After reading the link: Sustainable Gardening Australia by Helen Tuton, it was explained in there about the wicking action.My concern is that you may have a "potential issue" with your bed so please be aware of this, IF you have any issues (hopefully not). The article talked about the research that showed that the maximum depth that the "wicking" works on is 300mm or about 11 3/4 inches. In that top layer of soil it appears to me that you used a 2x12 and 2x6 boards, which is approximately 16 1/2 inches (11 1/4 +5 1/4). This may not be an issue but if you have trouble with the soil wicking, you may have about 4 3/4 inches too much soil. If this seems to be a problem, just scoup out 4-5 inches of soil next spring and replant.The other issue I had was that the same article talked about laying in over the landscaping fabric a "good quality water retentive soil" for about 150mm or about 6 inches. I am not sure what a good quality water retentive soil is but I am not sure that composted leaf mulch is what they mean, but I may well be wrong. If someone knows please enlighten us all. I think the leaf mulch would allow the water to drain down faster than retaining it to be wicked upward. My thought is a soil that has been amended but still has a fair amount of clay in it, which slows the percolation of water through the soil would be more of a water retentive soil. Again, may be a minutia point but just thought I would mention it. You went to a lot of work making this project and did a great job. And I really do hope it works as you wish. If you have some problems with dry soil and lack of wicking, I just wanted to mention the above as possible issues that could be resolved to give you a successful Wicking Bed.

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