I've been foliar spraying 1-3xs/day, ans noticed a lot of yellowing leafs when I shouldn't have any
I wrote to Harley Smith of NPK:
What RAW products and in what ratios, as well as how often do you recommend for a foliar spray...
There are several RAW products that can be used in a foliar spray. My favorites are a combination of RAW Kelp, RAW Full Up and RAW Yucca. Use the low dose on the instructions and spray no more than once a week during veg and early flowering. Once every two or three weeks will still have a noticeable effect on the plant.
Some of the other RAW products can also be used for foliar feeding, but they are usually reserved for treating specific nutrient deficiencies.
Hope this helps!
Director of Research