WOW! What did you do to help it flowering like that? I have so many plants that do not flower at all.

I don't know what I am doing wrong. Am I maybe using a wrong fertilizer? I thought about ordering new
plants flowers making kind of an experiment with a new fertilizer and a new way of treatment. Maybe that will help and if it does I might switch on my other plants to the same method hoping they will flower once again and are not completely ruined.