Repurposed (Recycled) Pop Bottle Propagators Repurposed (recycled) 2 liter bottles make great propagators simply by adding a deli container on top oz - on the left, 24 oz on the right). They're a perfect fit.
How to make a Sub-Irrigated Planter. I'm not sure I would use a two liter plastic bottle though. Over time I would fear the plastic breaking down enough to poison the plant. Perhaps a wine bottle instead.