I don't think there's a group like this around already! But there's a fair few Plant/ controllers and the like!
Welcome to the game forum and RP community by the way.
Also if I could ask, which server have you been playing on? As much of the RP community around here is on Union
Welcome welcome. No idea about SG. The RP community on union varies vastly in my experiance.
But join us overhere anyway if you haven't already!!
[Union Roleplayers]Kiken: Tick the off in your Observer Book of Lesbians
[Union Roleplayers]Nitro v. IV: we need a perma-man feature
[Union Roleplayers]Nitro v. IV: I'd trust you more if you did it in front of me
Gotta love dem dere RolePlayers
I should have said I am on union, and I've made a controller with her powers being Plant control as the first and empathy as the second. But nature theme doesn't have to be plants, the four classical elements all come from nature so I think there's a fair amount of room for ideas.
Of course that's if anyone's interested in the nature idea anyway, I suppose I'm coming into the game a little late and most supergroups are set up by now?
There's always new players who'd be up for joining a supergroup. I'd imagine that most veterans who're interested in SGs are already in one, but even there, there might be possible recruits. I'm new myself (first post here, actually) so I might be wrong, but that's the impression I get. (I've already got plans for a SG exclusively involving IRL friends, otherwise I'd be interested in joining myself. Maybe if I make an alt sometime.)
So many new people this month. A lot of them are joining established teams like you Season, a few are making their own. You said you're looking out for RP, best place to find supers socialising is either at the pub in Pocket D or the park by the big statue in Galaxy City.
I've been privileged to become a member of some of the main roleplaying groups in the Union Universe, this server. Here is a list of those I know, with brief descriptions of what I think the teams stand for and roughly what their numbers are. Hope this gives you a better overlook of the union heroes RP community.
Guardians of the Earth are a small team of brave and mighty sentinels, based in space orbit, guarding the planet from local and intergalactic threats. From a growing roster of 12 heroes, there are currently 4 core members.
The Militia is a team of citizens who volunteer to defend the city from crime, gangs, outlaws and terrorists threats. From a roster of 26 heroes, there are currently 18 core members. Mutant characters are popular.
New Heroes Union is a collection of heroes who strive to protect our dimension from domestic and alien threats. From a growing roster of 82 heroes, there are currently 28 core members. Magic characters are popular.
Art of War is a group of highly trained warriors from England who now use their skills for global operations. This group mainly plays out-of-character and only a few members are roleplayers. From a growing roster of 84 heroes, there are currently 18 core members. Science characters are popular.
Unity Vigil is an organization formed to help heroes and provide a networking group to liaise with government and non-government organizations. I'm not a member of this team so I can only approximate a number of 12 core members, and hazard a guess at a roster of 48. I think Technology characters are most popular.
Shield Police is my own project supergroup with a growing roster of 12 heroes and 4 core members. We are designed to work with Paragon City's Police Department. Our mission is always making Paragon City safe for all the people we serve. We cut crime and the fear of crime while upholding the Law. Our vision is to make Paragon City the safest major city in the world. A lot of Natural characters but all have an interest to work with Police.
Interesting concept. I'm quite the nature buff myself in RL so this interests me. I already have a nature based character, my Stone Tanker, Karnac who is a recovering victim of the Devoured Earth but who retains a link to the Earth Mother herself.
However, I'm on a bit of an RP break at the moment but would be more than happy to help knock some ideas around and see how this idea progresses. 
@Dante EU - Union Roleplayer and Altisis Victim
The Militia: Union RP Supergroup - www.themilitia.org.uk
Certainly sounds interesting. I've got one toon that could slot in, the only real problem would be fitting it in.
It is certainly an interesting idea. Most themed groups I've seen tend to focus around one of the five origins more than an actual character type. Nature is an interesting one because I know very few nature-themed characters, let alone groups. Plus, if you stretched it out a bit to be broad enough for "elements" which could be classified as nature-based, then you can always have what the Chinese (or was it Japanese..?) considered the fifth element - metal
Although I did start a group I've found myself a bit strapped for time, combined with the fact that I'm not a great leader I think I won't actually be pursuing the idea sadly, thanks for your interest though, and thanks for the list of roleplaying supergroups, might look into some of them.
I just started playing 4 days ago after seeing an advert about the game's anniversary. Enjoying it so far, though I've not seen much rp around, but still I've met some nice people.
Anyhow I was thinking about creating a supergroup themed around people who have gotten their powers from nature/use their powers for the cause of nature, I was wondering if there was any group already like this and, if not, if there would be any interest to form one?
Anyway, that's about it for now, nice to meet you all!