thanks for finding that post.
IMHO, (as someone who's written web articles) it's just another of the multitudes of web articles with little real information.
If the author really 'works for the welfare of plants' and 'loves to share her knowledge' I ask her to paint some plants and report back. As is, it's a collection of bits of info and guesses - except about paintng the pots, and the most analytical part is the shipping dates on types of paint (how can one possibly state that with authority?)
Says this in a blue highlighted box
Moreover, better to go with painting the pots as the paint adheres quite nicely to terracotta and ceramic pots and is safer.
then goes on to tell more about painting plants.
