Brand History

A legacy of quality animal nutrition

Reputation Matters

A reputation is not a gift — it is earned over time. Henry Kingman (H.K.) Webster had already proven himself an ambitious young entrepreneur by 1868, when at the age of 23, he “embarked in the grain business on his own account, hiring a grist mill in Lawrence, Massachusetts” where he began manufacturing his own brand of quality feeds to meet the demands of the “horse and buggy” era.

This seemingly ordinary transaction launched four generations of leadership in the H.K. Webster Company, a pioneering enterprise in the New England states; and eventually Blue Seal, the most trusted animal nutrition brand in the northeast.

The name “Blue Seal” was adopted by the H.K. Webster Company in 1910 to identify its high-quality feeds for poultry and livestock. Implementation of a “batch” mixer for the mechanical blending of products was one of the earliest attempts in the Northeast to provide scientifically formulated feeds for livestock. This was the beginning of a string of innovations that included more mechanization and automated systems. In the 1920s, the company installed molasses mixing equipment, the first of its kind in New England.

Like the pioneering spirit of our founder, Blue Seal progress has never faltered. His leadership was key to the success of the Blue Seal brand, and the basis for its reputation of quality, service and trust.

h k webster founder blue seal 1

This culture of innovation has resulted in one breakthrough after another; and it is a culture that has held up well under the test of time.

Today, Blue Seal builds on that reputation by delivering superior animal nutrition products. Like our founder, we focus on innovation, research, manufacturing and service. That’s how Blue Seal earned a reputation that people trust — generation after generation.


H.K. Webster Company is founded by Henry Kingman Webster when he sets up shop in a gristmill along the Merrimack River in Lawrence, Massachusetts, focusing on quality horse feeds.

1868 Blue Seal


H.K. Webster Company expands to a new facility at 24 West St., Lawrence, Massachusetts.


Dean K. Webster, son of the founder, introduces the name Blue Seal for its horse, poultry, and dairy feeds and later installs a “batch” mixer in the H.K Webster Co. warehouse for the mechanical blending of feed products.

photo of Dean K. Webster


Blue Seal installs a molasses mixing plant, the first in New England. This year also marks entry into the wholesale and mixed-car feed and grain business. During this time, the third generation of Websters — Dean Kingman Jr. and Walter Neal — join the company.


Sterilizing equipment is added to treat returning feed containers to maintain quality.


Blue Seal hires a poultry nutrition specialist who authors the Blue Seal Poultry Manual. The company soon adds a dairy nutritionist, who goes on to compile the Blue Seal Dairy Instruction Manual. Their expertise is made available to customers. 

Chick Starter bag


An extensive belt conveyor system is added to carry bagged feeds directly from mixing machines to rail cars at the Websters’ own switch track. 

Blue Seal 1937


The Quaker Oats plant in Richford, Vermont, is acquired to manufacture Blue Seal products. Sales increased by 50% the first year. 

Blue Seal


The fourth generation of the Webster family — Dean K. III and R. Kingman “King” — became active in the company. 

Kingman and Webster


A record 200,000 tons of feed were manufactured by Blue Seal.

1956 Blue Seal


Blue Seal Feeds adopts the slogan, “Your Partner in Progress.”


The first Blue Seal “Satellite Mill” was constructed for unpelleted poultry feeds. Satellite plants could be operated by a single person (the bulk truck driver) and were completely automated, from unloading of ingredients to loading of finished feed. 

1964 Blue Seal


Improved dairy and equine feed formulas are developed. A greater emphasis was placed on growing the dairy feed business. The first pelleted dairy feed “Satellite Mill” was constructed.


A Specialty Feeds Dept. was established to serve the emerging food market for dogs, horses, rabbits, wild birds, and backyard farm animals.


A new Blue Seal logo is introduced and Blue Seal launches remodeled company-owned “Feeds & Needs” stores to provide its animal feeds and foods as well as lawn and garden and other products to New England customers. 

1976 Blue Seal


A pet food plant is added to the Richford location.


Blue Seal develops an innovative dairy feeding program based on Energizer 20 Dairy Pellets, which allows personalized customization of bulk rations for herds.


Bow, New Hampshire Facility opens.


Arcade, New York mill constructed, including pet food extruder and baking facility.

photo of mill in Arcade, NY


More than 100 years after its start, the H.K. Webster Company became Blue Seal Feeds when it was acquired by Varied Investments, Inc., the predecessor of Kent Corporation in Muscatine, Iowa.

Blue Seal logo


Blue Seal begins manufacturing dog biscuits in the Arcade, New York mill.



Blue Seal Feeds reaches another milestone, producing a record 700,000 tons of manufactured feeds.


Blue Seal moves its offices from Lawrence, Massachusetts to a new facility in Londonderry, New Hampshire.

1994 Blue Seal


First feed shipped from the fourth full-line mill in Hagerstown, Maryland, built to support new business in the Mid-Atlantic area. 

Blue Seal


The Blue Seal manufacturing facility in Bow, New Hampshire is awarded 2004 Feed Mill of the Year! “Safety Is a Way of Life” for the employees running three shifts, six days a week. The 63-year-old plant operates at more than 90% capacity. Nine Blue Seal plants supply over 1280 stores in the Northeast. 

2004 1


A 60,000 square foot warehouse is constructed in Arcade, NY to serve as a Distribution Center.


A new line of extruded horse feed — Sentinel — is introduced to consumers.

Blue Seal Sentinel bags


Blue Seal Feeds of Londonderry, New Hampshire, and Kent Feeds, Inc. of Muscatine, Iowa, merge to form Kent Nutrition Group, Inc. (KNG). KNG was created to bring out the best in these two highly successful regional feed companies.

Kent Nutrition Group "combo" logo


The Blue Seal plant in Hagerstown, Maryland is awarded 2014 Runner-Up Feed Mill of the year. To ensure food and feed safety, the Hagerstown plant is certified in AFIA’s Safe Feed/Safe Food Certification Program. Applicants were evaluated based on feed safety, overall awareness of food safety, quality, regulatory compliance and operating efficiencies. 

2014 Blue Seal


Kent Nutrition Group introduces a new modified regional brand strategy making Blue Seal the KNG brand in the Eastern United States and Kent the KNG brand in the Midwest. 

2015 Kent Blue Seal


Blue Seal launches two new product family brands and packaging for EnTrust™ pet food and Inspire™ horse feeds. 

EnTrust and Inspire bags


A new, state-of-the-art swine research facility opened at the Kent Nutrition Group Product Development Center. 

swine research facility


Kent Corporation, parent company of Kent Nutrition Group (KNG), makes an $8 million commitment to the new Grain Science and Feed Mill facility at Iowa State University (ISU) in Ames, Iowa. 

2017 Gage Kent


Kent Corporation, parent company of Kent Nutrition Group (KNG), opens the Kent Innovation Center on the Research Park campus of Iowa State University (ISU) in Ames, Iowa. 

2018 Innovation Center


Kent Corporation, parent company of Kent Nutrition Group (KNG), attends the groundbreaking ceremony for the new Kent Corporation Feed Mill and Grain Science Complex at Iowa State University (ISU) in Ames, Iowa.

photo of Kent Corporation Feed Mill and Grain Science Complex ground-breaking at Iowa State University

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