How to heal broken branches?

Chelle frowned, trying to recall what she had once read in a book in the library once. There was a certain spell that helped to fix broken bones, fractures and all of that in the human body. Trees were, after all, living objects. So she presumed that those spells would work on the branches as well.

"Professor, how about the Ferula spell?" she said. The ferula spell could be used to fix broken bones or fractured bones.

And if that didn't work, then we could always use Reparo, right?