Last year I got 3 luffa seeds from Studio Meez. I did not follow the instructions though and just sowed them in May like my other cucumbers into a tiny pot, placed them in my greenhouse and waited. One of them started to sprout, a second one later also, but it never really developed well, but the first one grew into a big plant. It got so many pretty yellow flowers, but plant lice destroyed them and they fell off again, as you can see on the third picture. It seemed the plant went through some crises, I just observed everything and did not really interfere much but secretly hoped that I will get at least one luffa cucumber, so I could safe seeds for the next year to try again. After some time, the plant lice disappeared as fast as they appeared and the first cucumber developed! You can imagine how happy I was! After I cleared out most plants from the greenhouse, the luffa got another burst of growth. It seems to be a plant that wants lots of space. To be able to get a luffa sponge, you have to wait for the cucumber to turn brown outside. Mine didn't reach this state though, so I decided to harvest them last week nonetheless. But luckily 2 of them were full-grown enough to contain a sponge! I peeled off the skin and the sponges appeared. Inside there were many black seeds. I shook them out and cleaned the sponges. They are really very pleasant to touch! I will insert a cord and hang them into the bath. I will definitely try to grow some more luffa next year.