It only takes an hour to go through it and they do serve lunches, but go to the next stop, Briggs Nursery in Plainville (up Rte 152) and have a healthy lunch there. I had the Quiche and free lime water for $5. We garden shopped after eating.
Not done yet. Jump on Rte 95 South, and go to Roger Williams Botanical Garden in the park. Past the Carousel on your right. Only $2 admission and so worth it. Take pictures, just sit and soak up the atmosphere or work on a painting. This is how I survived winter. Give it a try.