Is fresh rhubarb sold here? I want to make a pie from scratch :)

When in season (spring)

Not now but they do sell it .

I think that I've seen it there. I think so

I'm not sure if they sell that.

Only in the spring when in season

Yes, when it's in season. The market offers local produce. Rhubarb season is April to June.

They do when they are in season

Yes they do!

Well....yes, the Union Square Green Market definitely sells rhubarb, but only when it's in season, which Is May-July in NY ;)