Can the newly transplanted Lagerstroemia indica be covered with plastic film to prevent freezing?

The water supply of newly transplanted trees is the most important, and the plastic film can effectively control the loss of water and also play a certain anti-freezing role.

The flowers of Lagerstroemia indica are clustered at the top of branches in a cone shape, and the perianth is dry and bright red. Pink or white. The old bark of Lagerstroemia indica falls off after the new bark, so the trunk is smooth. In summer, the tree is full of flowers and has a terminal panicle.