Since Luna is a horse she likes to roll in dirt. When she got banned to the moon she had some seeds in her fur and there was also stuff between her teeth. There was a lot of grass but luckily also tomato, apple, strawberry and blueberry seeds!!! With her strong alicorn magic she managed to make an airtight bubble that she could get just as much CO2 in to make the first plants grow! You can probably imagine how she watered them too. It all was a very tiring process but she had something to keep herself busy! The years passed and her little garden got fuller and prettier. It also looked completely different every century. As you can see: Lettuce and a few little bugs had made it in there too x3