Re-furbishing a wooden greenhouse.

[Tail End Charlie]

I have a wooden greenhouse (cedar I think) and it is 10 years old. It is looking a little shabby (outside is faded and has green slime in various places and inside there are some jelly like things which I don't know what are). It says "clean me up" but is it worth it?
If it is, is it better to oil the wood or use some "does what it says on the tin" type stuff?
I am prepared to take the panes out and do a proper job, or should I just do a cosmetic job, or leave alone?

[Two_Sheds]

Wooden greenhouses are super-expensive, so of course it's worth renovating yours

[Pies]

If its cedar its almost certainly worth renovating,id wire brus or wire wool the wood then oil