golden autumn farm- Luffa Bathroom Sponge 10 Seeds - Gourds! Golden autumnOrganic Non-GMO Seeds!! FBA - Fast Arrived! Identify our packing!! Ensure the germination rate!! The famous Luffa Sponge is really a gourd! From germination to maturity requires about 4 months On the vine, these gourds can reach anywhere from 6 inches to 2 1/2 feet long Easy to Grow-Guaranteed 90%+ Germination Rate For Seeds.