21-8-18 MagMum 
Product #71440
description & key benefits

This formula is specifically formulated for the heavy feeding mum crop. It is a high nitrate, high potential acidity formulation that mums require. Extra magnesium is added for improved greening. Contains Peat-Lite trace element level. It also provides a 5% increased efficiency compared to 20-10-20 formula which stretches your fertilizer dollar without compromising performance.  

for use on

Garden mums

growers who want

an acidic fertilizer, increased fertilizer efficiency, increased levels of magnesium


mixing instructions

Chart displays the amount of dry fertilizer (oz.) to add to each gallon of water to make a concentrated solution. Please check your injector setting before use.

Limit of Solubility = 4 lbs per gallon

Important Notes:

E.C. value is the best method to determine fertilizer strength. Fertilizer appearance may vary in color due to variation in raw material size and tracer dye distribution upon the particles in the bag. In solution, color will remain consistent.

For best results, use warm water to dissolve product. Jack's fertilizers are made with 100% soluble raw materials that will form a true solution. Some raw materials are slower to dissolve than others. Keep stock tank covered to reduce light and debris inputs. 

JR Peters, Inc. 

6656 Grant Way,
Allentown, PA, 18106
Toll Free: 866-522-5752
email: info@jrpeters.com


Having trouble?  That’s where we shine.  The lab and manufacturing facility at JR Peters is literally within steps of all of our staff.  We all work together to solve our growers problems and produce the highest quality products.  Our turnaround time for samples is about 3 business days - that means we can get you real answers if and when you run into bumps along the road.