Don't they have people who work for the parks who are supposed to patch up sick trees?

What alternatives would you have to heal sick trees or to grow new trees if you never considered the roots?

All the foresters can do is to cut down the sick trees in order to save the ones that are sound.

And don't tell me we're going to spend the day trying to heal any more sick trees. He gave Nest a pointed look.

"Yeah, have you nursed other sick trees back to health?" Robert asked with his trademark smirk.