A grandmother and her grandson share a love for gardening. They explore different plants including fruits, vegetables, and medicinal herbs. They also examine the bugs that come with gardening life including both good and bad bugs. One of grandma's favorite plants is cannabis. She uses the plant both for healing and for relaxation. She teaches the grandson about the reasons why some things are just for grownups. Children are smarter than we give them credit for (I know my grandchildren are!) and this book is a way for them to "just say know" when it comes to cannabis.