I think tsuyoku naritai actually works as an effective motto for transhumanism as well:
“I am flawed, but I will overcome my flaws. To each of my failings, I say tsuyoku naritai. To each flaw I have and to each flaw I will ever develop, I say tsuyoku naritai. To the flaws that are part of being human, I say tsuyoku naritai. If that means I must abandon what it means to be merely human, I say tsuyoku naritai. As long as I am imperfect, I will continue to say tsuyoku naritai!”
Canonically, it can’t beyond increasing the amount (a really bad idea in MoR) or summoning something that’s already dead. Not sure if it can in MoR, given that it seems mostly to use the 3.5 D&D spell list (although, come to think of it, neither create food and water nor heroes feast is a Sor/Wiz spell). Although even if it turns out plants are sentient, fruit should still be mostly okay.