“Organic” Controls Research University of Vermont, 1991-93, 6 replicatesPhlox paniculata ‘White Admiral’
Best Control (no differences among)
Baking soda, 0.5% (1.5Tbsp/gal water, weekly)
*Sunspray Horticultural Oil (3 Tbsp/gal water, every 2 weeks)
Both combined (every 2 weeks)
*registered and legal application, apply from onset of disease