How to Make Soil Cubes

Soil cubes offer a money-saving, eco-friendly alternative to plastic planters and seed flats. These compressed cubes of soil have an indentation in the center for seeds, making them both the container and the nutrient source for all of your starter plants. You don't even have to buy special soil for these cubes; you can use your own homemade compost or soil blend. The only tricky part about making soil cubes is keeping them together. Since they're just soil and water, you need to get the ratio right so they don't crumble on you.

Bucket
Soil
Distilled water
Soil cube tool

Instructions

- 1
  Fill a small bucket with soil. The soil may be purchased topsoil, but homemade compost works very well.
- 2
  Add distilled water about a pint at a time to the soil. Mix the water into the soil with your hands before adding each pint. Continue to mix until the soil sticks together easily when squeezed, but isn't muddy or dripping.
- 3
  Scoop up two handfuls of soil and press one into each of the boxes from your soil cube tool. These little tools come with two small, plastic boxes and a two-pronged frame to set on top.
- 4
  Place the bottom wooden slat of the two-pronged frame on top of the boxes. Push down; the prongs punch into the soil, creating a seed hole in the center of each soil cube.
- 5
  Remove the two-prong frame and turn each box upside down. Gently tap on each box; the cubes should loosen and release when you lift up on the boxes.

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