Tear off a paper towel section. Dampen the paper towel with water.
Place the paper towel on a flat surface. Place a single layer of green bean seeds onto half of the damp paper towel. Do not allow the seeds to touch each other.
Fold the other half of the paper towel over the seeds. Dampen a second paper towel and place it around the first damp towel. Fold the edges over to prevent air from contacting the green bean seeds.
Place the damp paper towels inside a plastic bag. Seal the bag to keep the moisture contained inside.
Place the bag in a warm location away from direct sunlight.
Inspect the green bean seeds after four or five days. Open the paper towel slightly to see if they have germinated. If the seeds have not germinated, dampen the paper towels if necessary, then allow them to sit for another five days.