Great shot warren.
Can it be those plant have too much of something? Or, as you are asking, can those be having not enough of something?
Take a 1 gal pail and fill it half way. add in 1 aspirin and allow to mix in the water. Water the plants lightly. Put a little 'fertilizer' about them and give them a little of that water.
Goooooooodddddddddddddddddddd Morning!!!!