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How to splice (Clone) a plant for your FogBox

To splice a plant means to multiply the plant, to create two or more plants from one original. And as each plant would be genetically identical, it’s pretty similar to cloning. Splicing is the best way of growing a plant and is much, much easier than growing from seeds. 


We have found that green onions are the easiest and most successful plant to grow. All you have to do is take the head/bulb of fresh green onions and stick them straight into the clay pebbles or the splicing pad. They should grow easily and all that is required is that you trim them whenever they grow too tall and replace them with a new set of green onions as needed every 1-2 months. 


  • Clip the stalk of your herb. The key to this step is to make sure each of these two new stalks has at least one set of two leaves, enough for each new plant to collect enough light to grow. We recommend making the cut about two to four leaf nodes (the part on the stalk where a set of two leaves grow from) down from the top of the plant. This tends to be 2 to 4 inches (5 - 10 cm). Make the cut just above the third or fourth leaf node down.
  • Prune the bottom leaves of the new stalk. While the leaves of a plant take in energy for the plant to use, the plant must also expend energy to grow them and keep them alive. The rootless stalk of your newly created basil or mint plant will only be able to take in enough water to support the top two leaves, so it’s best for the new plant to remove the lower leaves until only the top two remain.
  • Place the stalk of the new plant in water. Your new plant will need to grow some roots, and you can help it by placing it in a small cup filled with water. Make sure that you do not submerge the plant completely, the leaves will still need to collect sunlight and carbon dioxide to let the plant grow. If your plant does not stand up nice and straight in your jar, use a small office tool like a rubber band or a binder clip to hold it in place. I bent a paperclip to keep my basil plant in place.
  • Slide the clipping into your plant medium: Using a pair of really sharp scissors or a knife, make a slit along the side of your white splicing pad or brown plant medium. Slide your herb clipping in the slit, making sure that the bottom of the stem remains inside the plant medium. Thoroughly soak your medium, then place it back into the grow tray amongst the clay pebbles.
  • Chill. Nothing to do for it now but sit back and wait for your herb clone to grow some roots of its own. This might take anywhere from a few days to two weeks. You’ll notice over the course of these weeks that small roots will emerge from the bottom of the stalk, as the plant clone reaches out to establish a better water supply.


We've included a splicing pad for use with the FogBox. Simply poke a hole through the pad or make a small incision using scissors, place the pad onto the grow tray (no clay pebbles needed) and insert the spliced plant or herb through the incision.  


Premium FogBox plant mediums are fantastic for splicing or growing from seed and are now available on Amazon!

If you wish to splice, follow the same instructions as is mentioned above. If you wish to grow from seeds, simply add 2-3 seeds on top of the plant medium.

To situate in FogBox:

  • Place plant medium(s) with seeds or splicing onto desired location on the bare grow tray
  • Add clay pebbles to grow tray
  • Surround plant mediums with clay pebbles to hold them in place

For extra assistance, feel free to reach out via!