There are a lot of nature deities out there and I figured I would list a few here as it is appropriate. Nature was important to the ancients as they still gathered fruits and hunted frequently for food. A few of the Gods and Goddesses are:
Flora (Chloris): Goddess of flowers and plants. Very important to the Romans.
Faunus (Pan): God of wild animals. Both Flora and Faunus live on as we refer to the wildlife with those names.
Green Man (Liber/Dionysus): A long with wine, the Green Man or Liber is also associated with the woods and wildlife.
Ceres (Kar/Demeter): Mother Nature is based on her as she is both a Mother Goddess and a Goddess of Nature.
Diana (Artemis/Hekate): A hunting Goddess, she is always around wild animals and nature.
Ops/Rhea: An ancient Mother Goddess, some say Kybele became these important Goddesses.
Kybele (Cybele): An original nature Goddess who is said to of become Rhea.
Kore (Persephone): Spring Goddess who is very important to the people.
Brigid: Celtic version of Persephone, another Spring Goddess.
Eostera: The holiday Easter is named after this nature Goddess.
Pomona: A nature Goddess of fruit trees. They were so important they had their own Goddess.
Gaea/Terra/Earte: Of course, we need Mother Earth or there would be no plants animals or us!
The city of Pomona California is named after the Goddess of fruit trees: