How Do I Adapt Potting Mix To Use For Lotus Seeds?

Question

I purchased 10 bags of 64 quart potting mix on close out at Lowes for less than $2.00 a bag. I have large containers that I want to plant lotus seeds in. Is it possible to use the potting mix as a “filler” in the pots, and then add 6″ of aquatic soil on top of the potting mix, followed by pea gravel or river sand on top of the aquatic soil before adding my water? Would this work? It would cost a small fortune to fill all my containers with full price aquatic soil, I’m trying to cut corners and utilize my inexpensive potting mix as a filler. Thank you in advance for any help!!

Answer 1

This will entail a little more work on your end, but it isn't something that can't be done. Using potting mix as a filler can work if you thoroughly rinse it first to remove excess fertilizers and chemicals. Layering 6″ of proper aquatic soil on top—with pea gravel or river sand as a cap—can create a suitable rooting zone for your lotus seeds while helping maintain water clarity. However, potting mix is designed for terrestrial use, so it may leach nutrients that could affect water quality. As an alternative, you might consider mixing the potting mix with an inert filler like washed perlite or pumice to minimize organic content, or use it only in non-submerged areas. Regular water testing is advised to ensure the environment remains ideal for your plants.

https://www.gardeningknowhow.com/ornamental/water-plants/lotus/how-to-grow-lotus-plant.htm