Answer:
I am a time for gathering crops. Remove the first three letters and I become an object you can wear.
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain; doing no harm, and feeling no pain. What am I?
I like to twirl my body but keep my head up high. After I go in, everything becomes tight. What am I?
My head bobs lazily in the sun. You think I'm cute for my face is yellow my hair is white and my body is green.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.