How Old Cardboard Boxes Can Help Your Garden. Patricia Shannon. April 17, 2025 at 4:30 AM. ... In the morning, you can lift the cardboard and scoop up gathered pests by hand (or shovel).

Even if you can't get boxes for free, cardboard boxes only cost about $2 each, while renting equivalently sized plastic crates may cost $3 to $6 per box. The one exception to that general price ...

“Cardboard boxes may not have the structure to hold up to being stacked,” potentially crushing your valuable heirlooms. That’s especially true if moisture compromises the cardboard.