Luffa: Greenhouse Plants
W – warm, minimum of 13°C (55°F) / T – tropical, minimum of 18°C (65°F)
I wonder how many people thought, as I did for years, that Loofah Sponges used all over the world as bath time back scrubbers came from the sea. There are of course sea sponges but the Loofah is the inner structure of the fruit of Luffa cylindrica which is related to the cucumber. Most of the best sponges are grown and processed in Japan by immersing the ripe fruits in tanks of running water until the outer wall disintegrates. To grow plants that will produce good sponges we really need to give this plant tropical conditions, as the fruits which resemble plumpneed to ripen from green to brown before the flesh will come away easily from the inner structure. Seed should be sown at the beginning of March and culture should be as for Lagenaria.