Under ordinary circumstances of use, using Flourish Glue™ will not cause noticeable root die-off in plants. If a root is completely encased in Flourish Glue™, the portion that is encased will die. However, coming into contact with Flourish Glue™ does not inherently kill the root (Flourish Glue™ is not root poison) and any portion of the root that is left exposed to the water will continue to grow perfectly well.
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