This is also a great idea for starting seeds as the moisture comes from the bottom, thus eliminating the fungus that kills many seedlings when you water from the top.need to bottles tho and I don't drink soft drinks.
If you live in an apartment or do not have much room to garden, then use a garden pyramid to plant all kinds of things. They can work on balcony's, backyards and in the home. Space saving ideas for gardening.build up.
Patio Decor and Gardening / urban gardens, small space manipulation. No instructions, but good inspiration for taking a very narrow and challenging space and turning it into a tiered garden with vertical elements.