I wondered if that wouldnt work.I dont use it in 18 inch deck planters.Too messy.These are the containers.I will fill the blue one with peanuts and use another plastic planter inside as a sleeve.The fill will just bring the level up so the plastic sleeve wont fall short.
The snack bowl isnt as ridgid as it looks but stiff enough.I love the color ,that was prime in my choice.Its not completely opaque so filler inside will need to be something else than p nuts maybe.
I will plant next spring.There are "sold outs" on some of the plants I want.