sirtalis
Well-Known Member
I always mix in dolomite lime at beginning of season and top dress Epsom salt after a month or so for Mg* + Sulfur. I Mix in Langbeinite into topsoil after first few weeks of flower for the K and sulfur.
I don’t have any hard evidence of efficacy, but I do believe that it makes my plants more hardy and supposed to aid terpenes they say.
I do 100% notice that my plant’s leaves’ turn a shade of blue-green after the epsom/Langbeinite applications, which I think is pretty cool.
Interesting, I know sulfur is used to turn rhododendron/azalea flowers blue. It seems like a slow release of K, Mg and S through weeks 3-9 is pretty perfect. Thanks for the info!