Where can I buy large concrete planters in the Los Angeles area?
I don’t live there, but you could make them yourself using plywood forms. I have never done this, but this is what I would do: Make a box in size you want the outer edges to be, then make a smaller one to fit inside, pour your bottoms then when set up enough, put the smaller box inside and pour your walls in the gap. If you want a drain hole, you will have to drill a hole in center bottoms of both boxes and insert pipe or something before pouring the bottom and lower the inner box over pipe through matching hole then pour sides. I have even seen dyes that can be added to concrete to give them color. You should be able to get all supplies from your local Home Depot or other type store, just ask for advice from people in the dept.
