It sounds like you might be talking about pyramid garden towers?
These look like a pretty handy way to grow smaller edible plants. Things like herbs, leafy greens, or strawberries might do very well in these, and you’d definitely need less garden area to have one. They might go nicely in a greenhouse too.
Oh nice, I hadn’t seen these before, but they look ingenious!
A great way to repurpose waste plastic too, especially as not everywhere has plastic recycling facilities. The water efficient part is appealing too. Solutions like this would be helpful for people living in more arid climates!
Individual Action: What You Can Do About Climate Change (Yes, it’s like twenty individual billionaires doing about 70 percent of the damage. That does not mean doing the cutesy little home-grown potatoes thing isn’t going to make a small difference.)