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Epsom salts make the best and easiest fertilizer. For potted plants, dissolve 2 tablespoons of epsom salts per gallon of water, and substitute this solution for normal watering at least once a month. Or sprinkle it into the soil before planting seeds.
Tame Your New Plants: Here's an attractive way to prevent invasive plants such as dwarf bamboo from overrunning your garden: Plant them in terra-cotta chimney flue tiles. Use a tile with a diameter that is at least 4 inches wider than the plant's root ball. Sink the tile into the soil so that the lip sticks up 1 inch; plant inside the tile.
DIY: PVC Pipe Strawberry Planter: it seems pretty clear that they have taken a length of PVC drainage pipe, cut out holes for the plants and then filled it with soil. I could see 3 or 4 of these in a row along a sunny fence. Holes are cut in the sides of the pipe and seedlings planted into them. The tower is watered from the top down.