My most popular pin on Pinterest this month has been Pumpkin Observations, describing a pumpkin using your five senses, found at 2 Teaching Mommies. It didn't surprise me to find even more ways to describe pumpkins when I searched the web. (NOTE - This link no longer works, but all links below lead to wonderful describing activities.)
Find Pumpkin Anchor Charts and other ways to describe a pumpkin at My First Grade Backpack.
Create a Wordle with your describing words at Wordle.net.
The First Grade Parade has several great describing ideas. I love that her students describe the pumpkins using similes.
Make the pumpkin patch describing activity found at Carrie's Speech Corner.
Conduct a Pumpkin Investigation at A to Z Teacher Stuff.
Many pumpkin activities, including adjectives to describe the inside and outside of a pumpkin, can be found at Simply Second Grade.
Making Grammar Fun! -- Adjective Pumpkins! at A Day in First Grade.
My Pumpkin Adjectives