How to Build a Hydroponic Garden

Written by Kristen Randall

Have you ever wanted to be able to grow your own food? If so, hydroponic gardens are an easy way for even the least experienced gardeners to accomplish this. Hydroponics is a way of growing plants in soil-free nutrient solutions and can be done at home using Styrofoam boxes.

Here’s how to get started!


  • Black plastic heavy-duty receptacle liner bag
  • Styrofoam ice chest with deep lid cover
  • 6 Styrofoam cups
  • 6 gallons distilled water
  • Marking pen
  • Craft knife
  • Perlite
  • Sphagnum moss
  • Lettuce seedlings or enough lettuce seeds for six plants
  • Plant nutrient mix


  1. Line Styrofoam ice chest with black liner bag. Fill with distilled water.
  2. Using the top of Styrofoam cups as a template, trace 6 evenly spaced circles on the Styrofoam chest’s deep lid cover. With a craft knife, cut out circles 1/4 inch smaller than Styrofoam cup lid circles. 

  3. Using craft knife, cut small hole in the bottom of Styrofoam cups. Place Sphagnum moss in cups and top with perlite, filling to just under rim of cup. 

  4. Insert lettuce seedling into perlite, and fill in perlite around seedling.
  5. Place lid upside-down on chest. Place cups in holes of lid. 

  6. Water seedlings each day with nutrient mix, making sure that the water level in the container is not too high: There should be about an inch of room between the water line and the bottom of the Styrofoam cups.
  7. After a week to 10 days, roots from the seedlings should begin entering the container.
  8. As the plants grow, pick leaves as desired, always being careful not to over-harvest.




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