Can this be mixed with composted cow manure and used to grow perennial rye grass.
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Thank you for inquiring about MiracleGro Potting Mix. We do not recommend mixing this with manure or using it to grow grass. This is only meant to be used in containers, and may not work well when used otherwise. If you have any questions or would like further assistance, please contact us at http://tinyurl.com/noc5mcg and one of our representatives would be glad to assist you.
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