Disclaimer: This post was originally posted by Hero Member, movrshakr. This user is located in Zone 10a - near Cape Canaveral. This was originally posted on April 30, 2013.
psyche, the reason for talk about tulle, burlap, and weed cloth is because some people have had problems with boxes using hosiery for fertilizer.
A few have said they worked OK. The hypothesis is that some hosiery material may not allow the nutrients "easy exit". To me, it is still an open issue, but personally, I had bad results when using them, so I strongly lean to there probably being a problem with some of them. However, I cannot prove the bad results were due totally or in part due to them. They are very convenient though, for sure.