Cut the bottom off a plastic pot to contain invasive plants & bury in the ground. I have been doing this for a few years & works great for containing plants that tend to spread, but that I still want to plant in the garden. This also works good for planting a plant in an area that tends to get filled with roots etc. from other plants. I will use a larger pot so that the plant can spread it's roots and grow deeper roots, but keeps other tree roots from choking out the one I planted.
I'd feel like I live in a Dr. Seuss book if these were in my yard. But they are so pretty! // Kochia Scoparia Seeds evergreen foliage plant for landscapes. Position: full sun/part shade Soil: Any soil Rate of growth: rapid ~ Hardiness: fully hardy Height: 15 to 36 inches Native: Europe, Asia and Australasia. Growing Region: Zones 2 to 10. Flowers: Summer. Flower Details: Light green, white. Hairy flowers Foliage: Green through to red!