I hate the idea of foliar feeding, but after waiting 4 days so far for my soil to dry out (so I can fix a cal-mag-iron problem) and watching my plant get worse and worse, I decided to give this a go. Yesterday I sprayed the plants undergrowth lightly with 1/8th teaspoon cal-mag to 1 gallon water; The dilution rate recommended is 8 ml per gallon(soil application), mine amounted to about 5/8ths ml per gallon. Didn't see much improvement today in the upper canopy (but under growth seemed to have lost all its rigidity, purpling, and lime-greenness) so I sprayed again with 1.25 ml CalMag; this time hitting the upper canopy as well. 1 leaf got burned, the rest are fine. <-- is this just an anomaly that happens with foliar feed? I'd imagine all would burn, or none, not just one. I did not wash my leaves from yesterday, would that cause it? Should I always have at least 1 clean "washing" spray in between feedings? With spraying, how much should I be spraying? Should the leaves get a light misting so they don't appear wet but have some water droplets, or should they be soaked? Can I foliar feed on the same day I've used Neem oil or Zero Tolerance or pyrithrins? Has anyone done this successfully without burns? How diluted should the solution be? 1.25ml/gallon good? My water is 300-350 ppm naturally. How often can I foliar feed? Can I safely spray nutes once a week @ 2ml/gallon if I'm feeding normally thru watering? Also, would this foliar feeding mixture be a problem to run at all? After my problem is fixed I plan to spray once a week with 1ml AN SensiCalMag (4-0-0,Nitrate N, 5% calcium, .12% Iron, .05% Manganese) and 1 ml B52 B vit (2-1-4, 1.5% water soluble N, soluble potash) per gallon; every other week I'm swapping the B52 with GH Flora duo bloom. I don't think it would be problematic, but on the off chance anyone has done this and had problems please reply If anyone can weigh in, thanks!
You don't need to wait for your soil to dry to begin fixing a deficiency. You could of started flushing immediately then added your calmag.