How to Grow a Red Potato in Water
- 1). Wash a clear glass jar or glass with soapy water. Rinse with a mixture of 1 part bleach and 9 parts water. This sterilizes the jar to prevent any type of infection or pest infestation on the new plant.
- 2). Pick a clean red potato that is starting to sprout from the eyes. Squeeze the potato to make sure it is still firm and not mushy. If the potato is soft, or your fingers easily break into the potato, discard that potato, since it is starting to go bad.
- 3). Poke four toothpicks into the red potato halfway up from the bottom. Insert the toothpicks evenly spaced around the potato. Set them deeply enough so that the toothpicks support the weight of the potato.
- 4). Fill the jar with room-temperature water. Place the potato halfway in the jar by resting the toothpicks on the edge of the jar. Do not submerge the entire potato. Move the jar to a warm area with bright light.
- 5). Pour the water out of the jar every two days and replace with clean, tepid water. Roots will develop in 14 days. The top of the red potato will break open and the main shoot of the plant will appear.
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