Old sponges made from natural sources, such as loofah or cellulose, can be repurposed by chopping them up and adding them to ...

which is why you wait until June to plant corn seed. To be fair, most people don't eat luffa (though you can); they know it instead as loofah, a sponge-like material used in "natural" scrubbing.

In this video, I explain what happens when a luffa sponge goes to seed and how to easily grow and make your own luffa sponge. I also explain the difference between a luffa sponge and a sea sponge.

But exfoliating isn’t all these plants are good for. On the contrary, Gamble says there are many uses for luffa. Softer varieties can be used as a facial sponge in place of a washcloth.