Fixing Plant Issues with Foliar Feeding Cal Mag

If you've ever noticed your leaves getting those ugly rust spots or turning yellow between the veins, you might want to try foliar feeding cal mag to get things back on track quickly. It is one of those tricks that experienced growers keep in their back pocket for when the soil just isn't cooperating. Most of the time, we focus so much on what's happening at the root zone that we forget the leaves themselves are actually pretty good at "eating" if you give them the right stuff in the right way. ...

May 18, 2026 · 6 min · Gibb Neufeld