Cut the bottom off a plastic pot to contain invasive plants & bury in the ground, works great for containing plants that tend to spread. Use a larger pot so that the plant can spread it's roots and grow deeper roots. Great for bamboo!
Self watering hanging basket. The link shows putting a small pot in center and filling with water but I like the water bottle idea shown in illustration.remember to line bottom with plastic bag (between the soil and fiber or moss) - Gardening For Life