Who needs dirt? Not your houseplants, at least not all of them. Many can be cultivated using a technique called Hydroculture, where soil is replaced with water and a liquid fertilizer, and a clay aggregate is used to support the plant's roots. For people who travel a lot, or for those of us who tend to over or under water our houseplants, Hydroculture may be a good solution.
Plants are grown in containers filled with water and liquid fertilizer. The plants take in nutrients from a water solution through their "water" roots. After continuously being submerged in water, they have adapted by developing a greater capacity to store oxygen. Once the hydroculture system has been set up, a float in the reservoir indicates when it's time to add more solution.
Reduces pests and disease. No soil means no more soil born pests, including those creepy little potting soil gnats. You can also say goodbye to mold spores and mildew-a boon for those who suffer from allergies.
Lower maintenance. Hydroculture is cleaner and easier to maintain. By eliminating dirt, you eliminate must odors and messy spills. You'll need to water less often, transplant less often, and worry less about leaving your plants unattended while on vacation.
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You don't need to have a green thumb to grow houseplants in water. Even if you've killed every houseplant growing in soil that you have ever had, your success is almost guaranteed when growing them in water.
I began growing plants in water when I was trying to root a plant cutting that I had. I loved being able to see the roots as they grew so I decided to leave the cutting in water instead of planting it.
Some lily bulbs can successfully be grown in a water and stone filled vase. However, if the vase is clear the water may also support algae growth. After cleaning the rocks replant in an opaque or wrapped vase. This is a page about removing algae from water in which an oriental lily bulb is growing .