Luffa seeds

Luffa sponges don’t come from the ocean. And they’re not from manmade materials. Rough-textured exfoliators originate from luffa: dried fiber from the vegetable of the same name. Luffa or loofah (botanically Luffa aegyptiaca) is a vine-grown member of the pumpkin, squash and gourd family, Cucurbitaceae. 
Light
Luffa needs at least six or more hours of full sun—the more the better.
Soil
Luffa can grow in any soil type, however it requires good drainage. Make sure you can offer a well-draining soil that will help your luffa plant from over-saturating.
Water
Keep the soil moist but not wet until the seedlings are established. After that, in the absence of sufficient rain, water the base of the plants about 1 inch per week. Do not water the vines, which can spread disease,
Temperature and Humidity
Luffa needs warm to hot weather, in cool weather, its growth will slow down.