80-90 days to maturity. Luffa cylindrica ’Emerald’. Emerald Gourd Seeds. Non-GMO warm-season annual hybrid. This beautiful plant produces early maturing, smooth-type fruits that average 45-50cm long, 4-5 cm in diameter, and 300 grams in weight. The luffa gourd grows well in containers at least 1.5 feet deep with a trellis to climb up. Luffa gourds love temperate and tropical weather; they thrive in long, warm growing seasons. The fruit is good for eating, or it can be left to mature into a shower sponge! Approx 270 seeds/oz.