Many versions of self watering containers, also known as self watering grow boxes, self watering pots, and self watering planters are sold online, but you can make them yourself for a fraction of the cost out of some easy to find items.
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alternative to expensive seeding trays: Clear topped plastic takeout container lined with wet shredded newspapers. Place toilet paper rolls cut in half to fill tray then fill rolls 2/3 with native soil. Finish filling rolls w/ peat moss and plant seeds and cover. When seeds sprout, take the pods out and plant the whole pod in garden! :D