Perlite is a common part of potting mix, but did you know you can use it to grow potatoes and other vegetables hydroponically?
Start with a sturdy container that's at least ten inches deep. Drill drainage holes in the sides, two inches from the bottom, and fill it almost to the top with perlite. Then add water until the perlite is saturated and water comes out the holes.
Visit your local feed store for potato starts, often known as "seed pieces." Plant these cut side down in the perlite, about an inch below the surface.
Water every few days to keep the perlite from drying out. Once the plants sprout, feed them on a regular basis with a soluble fertilizer. In a few months, you should be ready to harvest!
- Grow Potatoes in Perlite (PDF)
- Grow Your Own Vegetables Without Soil
- Growing Potatoes in the Home Garden