Perhaps this is an prequel to (if I remember correctly) an Arthur C. Clarke
Sci Fi novel where colonists move to a planet where only plant life can
exist. Tractors and other mechanical objects apear to move too fast and the
colonists eventually go out to the front yard and face the sun and start to
take root. They eventually are discovered and rescued but they finally figure
out what happened to their neighbors who have some large trees around their
house...

Cheers,
Mark