The Q&A Archives: Water Hyacinth Care

Question: We moved our garden pond water hyacinths inside for the winter. They are kept in tubs in the basement with a plant light on about 8 hours a day. The plants have been inside for three weeks and are starting to rot. Any ideas why this may have happened? We used outside faucet water in the tubs and have not added any fertilizer.

Answer: These sun loving tropical plants can be difficult to overwinter indoors and it sounds like yours are suffering a bit already. They need full sun, warm temperatures, and plenty of nutrients to stay healthy. You might try running the lights for about 16 hours a day keeping the bulbs fairly close to the plants, and raising the temperature of the room to the mid seventies. Finally, these plants can be grown with their roots in a pot and the pot plunged in the water, thus allowing you to add fertilizer tablets to the potting soil.

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