Nitro-Phos Rose Fertilizer 18-12-6 is a favorite among rosarians. It has a large amount of nitrogen in two forms: Ammonium and Urea Form.​

• Ammonium speeds the phosphorous absorption needed for flower bud formation.
• Has an adequate amount of phosphate, potash, iron, and magnesium for healthy stems and full blooms.​
• 20 lb. covers 1,300 sq.ft.