Why stem plant not rooting
Unlike my rosette plants that develop strong roots after a while, my stems fail to root and keep coming off the gravel substrate. Whatís the problem. I am referring to my mermaid weed and Hygrophila polysperma stems, both are easy plant. No fish dug them out, and I make sure they are planted deep and tight But they just keep coming off without developing anchoring roots now and then that drove me crazy to keep replanting them.