Can I grow indoor plants in water only? What do I do with indoor plants in water when the water begins to smell bad? Other than replacing all the water.
Hardiness Zone: 6a
By marianjn from Provo, UT
I have seen plants grow in these greatly expanding crystals.
They also say:
" Water by itself is not a sufficiently nutritional diet. We recommend adding a few drops of liquid minerals to help provide nutrients to your plants in this new and any other growth media for your plants."
They sell this stuff (above) but I think that liquid "Miracle-Gro" would also work. You'd only need a drop every few weeks or once a month.
Here's apicture of their website:
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