Warning shots i seen first random purple leaf stems
random branching purple , like rhubarb
later buds mature too quick growth slows notice the rhubarb stem
Later
plant a lighter shade of green
leaves have
Yellowing between the
leaf veins
it seems to affect Nitrogen and Phosphorous a little too but not too much as far as i see
Leaves fall off completely
Growth slows right down
If this is not caught early then mag can really make a big dent in your yield , i see it with the orange punch , but what a great lesson to learn its priceless