The flower garden

"After planting a seed packet in the backyard, things don't go as expected for best friends Anna and Tess. They fall asleep in the sun and wake up to blooms as tall as buildings! Did the seeds really grow that fast? All is explained when Anna and Tess meet May, a little garden gnome whose magic is responsible for the transformation. The girls are May's size now, and they follow her through the flower garden and into May's underground gnome home--discovering new things about their world and themselves along the way"--OCLC.