Answer:
Up on high I wave away but not a word can I say.
Usually green but can be brown. It's a great place to play or lie down. What is it?
Goliath, The Jolly Green and Andre are all examples of this.
Old people and owls are said to be this.
This is a plant named after a light source. What is it?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.