It's marking 100 years since A. A.Milne's first book of poetry was published.
There are categories for adults and teenagers in the competition, brought to you in partnership with Siân Thomas, Ashdown Forest's poet in residence, and The Ashdown Forest Foundation.
The judging panel will be led by Sîan, who will be joined by Kathryn Aalto, author of the Natural World of Winnie-the-Pooh and Trustee of The Ashdown Forest Foundation, and novelist and zoologist Sanjida O'Connell.
The winner in each of the two age categories will see their poem published on the Ashdown Forest website and will receive a set of Winnie-the-Pooh books, kindly donated by publishers Farshore. The closing date for applications is August 31 at 11.59pm.