I have not seen the effects as I only planted last week, but my attempts to find out what potting soil works well for tropicals and subtropical led me to promix hp for a bagged soil. I got a large bag for about 50 bucks which felt pretty expensive. Some people said the miracle gro moisture control worked well. Most people are mixing their own from the fabled “gritty mix” which is frustratingly hard to make, or a mix of sphagnum, pine bark fines, vermiculite, sand, etc.