Two years ago, I traded someone for some luffa gourd seeds in the fall. The following spring, I grew them and they did incredibly well. The luffas were dried and used as dish sponges. Luffas produce an astounding amount of seeds, so I saved some of them to plant again this year. Unfortunately, they had a rough start and haven’t done quite as well as last year, but they’re still producing a few luffas. I plan on trying again to save the seeds, if possible. Here is one of their lovely leaves, about 5″ across, climbing up its trellis.