Cybele i believe
Hebe was the goddess of youth. She was also the goddess of rainbows.
Demeter, in Greek Mythology, is the Goddess of nature, fertility of the Earth, the seasons, and harvests.
They are known as nymphs.Also, if you are looking for a singular "beautiful young goddess of nature," it might be Persephone.The Nymphs were the young beautiful goddesses of nature.The main Nymph was Pan.
A minor nature goddess who is usually a young maiden is called a nymph.
Artemis, The Mistress of the Wild
nymphs were the godesses of nature
persephone,demeter,artemis,hera
A beautiful young goddess of nature often depicted in mythology is Persephone from Greek mythology. She is associated with spring and rebirth, representing the beauty of nature's renewal. Additionally, in Roman mythology, Flora embodies similar traits, symbolizing flowers and the blooming of nature. Both figures highlight the beauty and vitality of the natural world.
Pan.
Nausikaa
Gaia
she killed a young girl because she was jealous of how beautiful she was.