This trial was conducted on one year old “lotus variety” roses and the SumaGreen (SumaGrow) treated plants grew longer plant flowering stems and had bigger buds — 11.5% larger in 90 days.
Anecdotally, it was noted that there was “more color” and the color was “bolder.”
The difference was not as large on the three year “velvet” rose bushes, likely because the trial only lasted 90 days.
Vietnam Rose Trial: Báo cáo kh-o nghi-m SM hoa h-ng
English Translation: Roses Translated Báo cáo kh-o nghi-m SM hoa h-ng