Jacks Prof MagMum Feed W/ Magnesium 21-8-18 25Lb — Single Unit

Jack's Professional® 21-8-18 Mag Mum Fertilizer is formulated specifically for heavy-feeding mum crops that require high nitrate nitrogen and a strongly acidic reaction. Added magnesium promotes deeper green foliage, while elevated Peat-Lite micronutrient levels help support vigorous growth and consistent crop quality. The concentrated formula offers approximately 5% greater feeding efficiency than a standard 20-10-20 program, helping reduce fertilizer use without sacrificing performance.