Growing grapes and blueberries together

cinjFebruary 20, 2009

I would like to grow a bed of blueberries and grapes in my yard in northern Wisconsin. I already have wild blackberries and they grow very well here. My soil is sandy and I live in an area with an abundance of pine trees. I wrote a post about this on my blog, but I'm looking for more information from people who may have done something like this before. I want to prepare the bed properly to allow my new plantings the very best start in life. Any advise would be greatly appreciated!

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This may not work well because of the different soil pH requirements of these 2 plants. Blueberries are acid lovers (soil pH 4.0-5.5) & most grape info says they like slightly acid soil (pH 5.5-6.5). Your soil sounds like it might be good for the blueberries but need lime for the grapes but the only way to be sure is a soil test.

    Bookmark   February 20, 2009 at 12:32PM
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Wirosarian is correct that the blueberry pH is going to be lower than that of grapes for ideal performance from both.

I grow grapes in a clay soil with a native pH of 6.8 and have slowly tried to lower the pH just slightly with the use of acid forming fertilizers.

For my blueberries I removed the soil in a 2' wide by 1' deep area (per shrub) and back filled with 90% peat and 10% native soil and I scratch in a small amount of elemental sulfur annually so the surrounding soil can't raise the pH of the peat. (peat is naturally 4.something pH).

I think you probably could grow both grapes and blueberries in the same soil (shoot for a 5.5 pH), but I don't know that either would be getting the 'optimal' conditions, kind of a compromise solution.

If you attempted to lower the soil pH lower than 5.0 for anything other than the blueberries you might run into an aluminum toxicity issue. Personally I advise to prepare each soil separately.

    Bookmark   February 20, 2009 at 2:08PM
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You'll need lots of space for this to work too. In addition to the different pH requirements, blueberries have a very shallow root system and don't do well with competing roots. Grapes have very large root systems to support their vines.

    Bookmark   February 21, 2009 at 1:13AM
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