Does anyone know where I can purchase a chemical called 'Magnisal'
(magnesium nitrate). A grower at the Eric Young Orchid Foundation strongly
recommended it to me (over Epsom Salt) for improving the quality of my
phragmipediums. The
nitrate in Magnisal has been found to facilitate and accelerate magnesium
uptake by the plant leading to healthy plant development.

Thanks

Charles VanDyke