Watering your plants with Dr Pepper and tea ain’t gonna make your plants taste any different. Sounds like the guys who claim you can get more females from seed if you crush up birth control tablets and water them in. Y’all can chortle and water your plants with soda, don’t bother me. It’s just pointless, except I guess the phosphoric acid in the soda is a source of P.
If you can taste the difference, it’s the placebo effect. Plants don’t “retain” fertilizer in the tissue, it has nothing to do with ash color or taste. More old crunchy myths.
If you’ve been growing for 33 years, invented Romulan, and have all the answers, why you bothering to ask us how to increase trichome production?
The dye thing isn’t true and I can prove it. I add a shit ton of red food coloring to my flower feed to differentiate it from my veg solution and guess what…my plants aren’t red.