Impossible riches await!

Green gold, right?

By the water tank that runs off the roof drain-spout thing?  You know?  I was filling a can Saturday and noticed some really impressive lichen growing.  I AM GOING INTO THE TINY TREES FOR TRAIN SETS BUSINESS AS SOON AS I CAN!  I've always loved those little trees, so it only makes sense that they would love me back and make my family inconceivably wealthy!