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WIL-GRO® CONTAINER PREMIX 2023 is a quality, slow release fertilizer blend containing 20% calcium, 2% magnesium and 3 different soil buffering sources. It has a full complement of N-P-K, minor elements, and 78% of the nitrogen is in a slow release form that is released primarily by microbial activity. The buffering agents differ by sizing to maintain a consistent pH stability over time. Developed as a potting premix for nurserymen, it offers growers a simple, one component premix for making a potting media base capable of supporting a wide range of ornamental plants.

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