ἀκανθίζω
From LSJ
ἀρετὰ γὰρ ἐπαινεομένα δένδρον ὣς ἀέξεται → for virtue that is praised grows like a tree, praised virtue will grow like a tree
ἀκανθίζω: συλλέγω ἀκάνθας, Γρηγ. Ναζ. ᾀσμ. σ. 8.
bot. producir espinas, hacerse espinoso ὁ καυλὸς εἶτ' ἀκανθίζων Thphr.HP 1.10.7.