What do you call giant sleeping Lizards?

I wear a coat of emerald green, With tiny veins like rivers seen. I dance with fairies in the breeze, And whisper secrets to the trees. I hold a drop of morning’s dew, A tiny mirror of the sky so blue. When autumn comes, I trade my hue, For amber, gold, and crimson too. What am I, a little spell the forest grew?

There are four things I could be, An armless chair found at a bar, The growing stump of plant or tree, A sample from the Bristol Chart, Or finally, a decoy bird - would a pigeon be too absurd?

I have rings but never marry. I can stand for centuries without moving. Yet when someone mentions me first thing in the morning, they’re rarely talking about nature. What am I?

I have a jacket, but I wear it all year, I stand without moving, yet I reach far and near. I am covered in veins but I have no heart, I lose all my hair when the autumn days start. I have rings, but no jewels can be placed on my hand. What am I?