Do Plants Sneeze?

Do Plants Sneeze? was a project by Greg and Rodrick.

In Rodrick Rules, it wasn't shown if Rodrick won anything or not however in the online book, Rodrick got no ribbons for the project. Rodrick Heffley thought plants probably sneezed, but after testing with feathers, pepper, and feet, concluded plants didn't sneeze.^[1] He goes on to make another science project about plants called "What Type of Music do Flowers like Best?"

In the online book, Rodrick completes this project on his own in 24 hours. This was after his science teacher rejected his previous project on the effects of zero gravity. On the day of the science fair, Ann forces the entire family to support him. However, he loses to My Ferret Milky, which Greg even admits was lower quality than Rodrick's.^[2]