PAT2H Horticultural Consulting Services, Ryda, Georgia, 2009
Suståne 8-4-4 was evaluated for use on "Cocktail Whiskey" begonias. The trial compared Suståne 8-4-4 (45 day) to two industry-leading control release fertilizers, a 13-13-13 (T70) and a 14-14-14 (3-4 mo). Each fertilizer was incorporated at a rate of 0.85 lbs of nitrogen per cubic yard. The potting medium was a 50:40:10 mix (by volume) of pine bark, peat, and perlite.