I saw this idea in a Better Homes & Garden magazine a couple of years ago. I actually made this arrangement for Thanksgiving 2005. I cut out the top of the pumpkin (one from my garden that year), scooped out the 'guts' and fit a green plastic floral reservoir in it. Then I soaked a green floral foam block in water (per directions), placed that in the reservoir and then started arranging my favorite colored roses (18 from the 2 dozen bunch I bought at Costco for $15) to fit. I love it when the blooms are this size and I LOVE the 'berries' as accents.