Aziraphale once decided to gift Crowley a plant, because he knows that Crowley likes them, and it’s all good, except, Crowley can’t put the fear of, well, himself into this plant. It is a gift from Zira, after all.
Crowley: YOU ALL, YOU’VE DISAPPOINTED ME. GROW BETTER!!!
Crowley, turning to the plant that Aziraphale gave him: not you, sweetie, you’re doing great
idea: whenever crowley gets rid of plants who disappoint him, he gives them to aziraphale