tree doctor

me: oh, look, asher! this cherry tree is sprouting new tiny branches!
asher: oh, cool!
me: yep. that means it's a healthy tree. it has lots of new green branches.
asher: yeah, but what happens when it isn't healthy and doesn't have new branches? where does it go to the doctor?
me: um, well, there aren't doctors for trees, but sometimes there are some sprays you can put on them, kind of like medicine, that helps prevent bugs and mold from killing them.
asher: yeah, but why do flies and bugs and moles want to kill the trees?
me: i don't think flies and moles want to kill the trees, but some bugs like termites like to eat the wood inside the trees.
asher: yeah, but what happens if they eat the wood?
me: if they eat away too much the tree will die.
asher: oh, no. i guess we'll have to get that medicine for it then.

at the time of this conversation, i was really confused as to why asher was asking about moles killing trees. later, i realized that he misunderstood 'mold' for 'moles'. his concern makes so much more sense now.