The trees were planted last Friday to kick off long-term plans for a community garden at the kindergarten but when staff returned the next day, the trees had already been dug up.
A local had donated the trees to the kindergarten.
Kindergarten teacher Mich-elle Williams said she was heartbroken by the theft.
�They were part of a huge new garden that the children, parents and staff of the kindy have been working on this year,� she said.
�We don�t have much money but we rely on donations and fundraising to get our projects completed.�
The trees were planted to help kids learn about nature and create a garden for the whole community.
Bullsbrook residents have rallied to support the kindergarten with offers of donations and Bunnings in Ellenbrook agreed to supply new trees.
Ms Williams has concerns the trees will simply be dug up and stolen again but said she was overwhelmed by the support shown by Bullsbrook and surrounding residents.
She said if more awareness could be raised about the community garden then more people would keep an eye on it when it was replanted.