Doing it to a shirt Doing it to hair Flattening a skirt It's more than hot air

I rise by the fire, but shrink when I'm spent, Add th to my name and I'm a wide measurement.

In tears I hide, in seas I sleep, on winter roads I’m scattered deep. I season suppers grain by grain, a humble crystal with broad domain.

I stand in a line with others like me, holding your garments so neatly and free. I wait in the dark of a wooden hidaway, for you to to pick your outfit of the day.

I am green and shaped like tiny trees. Eat me cooked or raw for a healthy crunch. What am I?