Luffa aegyptiaca is a species of Luffa . Commonly known as Smooth Luffa , Egyptian Luffa and mướp hương in Vietnamese , sometimes under the obsolete name Luffa cylindrica and frequently misspelt "Luffa aegyptica", it is cultivated and grown for its fruit. The fruit resembles a cucumber . Young fruit can be eaten as a vegetable while ripe fruits can be use to make bath sponges. They may also be grown as an ornamental plant . It is native to northern Africa. Growing Info: Scarification: none required. Germination: sow seed 3/8" deep, tamp the soil, mulch the seed bed.