Fossil Fern Brights Pinwheel 40 2.5-inch Strips Jelly Roll by Benartex

How many different colors are there approx.

I tried scanning in the code for this answer but never got an email. Does this product need to be washed before putting into a quilt?

Are there 3 shades of a color?

How many jellyrolls does it take to make an 86 x 86 inch quilt?