"What can you tell me, then? I've tenatively okayed dairy products, but I'm not actually sure if I can live on those. Are fruits and nuts okay or would that make me infanticidal, is wheat capable of wishing to live...?"
"Thanks," he says, ignoring its tone. Maybe trees vary in personality and he can find a more helpful one. "And you've never spoken to a stalk of wheat in your life, I'm guessing?"
"Because they're not the sort of company you want to keep, or just because they don't grow in this yard?"
"And you don't care to keep company with wheat and dandelions because?"
There is only one tree in this yard - this is Arizona - but there are some trees down the street, and he can sit in one and "talk to himself" without that being a disaster.
"Hi," he says to the next tree.
"I do talk! It is fantastically exciting. I'm doing all right except for an ethical crisis! You see, I only recently realized that things other than humans talk, and now I have to figure out how smart they are and what it's okay for me to eat."
"Not you personally. I just don't know where to find a lettuce farm or a field of rye to talk to. I'm hoping to get some information about plants in general. The last tree says fruit and nuts are for eating, but I don't know about other stuff."
At least Grace will not need any new pages.
"Okay. Boy, I have more work to do than I originally suspected, I guess."
"Well, I can eat a bizarre diet and not buy wooden things of my own volition, but that doesn't stop anybody else. So I have to learn a lot of magic and find reasonable alternatives to that sort of thing that doesn't kill anything smart. And here I was thinking that I'd just, you know, cure iodine deficiency in sub-Saharan Africa and call that a good day's work."
"Thanks! Have you got a name? You are friendlier than the tree in my yard."