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Over the course of history, our farm has grown from a few modest mushroom doubles selling out of a pickup truck to being one of the largest mushroom companies in the US, selling over 57 million pounds of mushrooms per year!

State of the art technology, improved business processes, and decades-long experience give us the competitive edge we need to satisfy customers nationwide. Our continued investment has given us the ability to continue our passion for quality and service.


Some of the first mushroom doubles used by William Phillips' brother, Penn.

Early methods of composting, before modern technology.

One of our stages of growth, in this picture the second packing plant and administration offices under construction in 1979.

The original packing plant shown here in 1973 is where many ideas and plans were made.

Here is an early packing line, circa 1974. The first packing room had only 18 employees.

Here is an image showing some of the packing lines located in what is the third and current packing plant.

Constructed in 1996 and expanded twice since then we are dedicated to utilizing the best techniques and pioneering new ones.

First constructed in 2009 Warwick has been the pinnacle of the third generation of mushroom growers and pioneers.

Using the most advanced mushroom growing technology and the best manufacturing practices, we are able to provide the highest quality product.

We have some of the best people in the industry employing strategic processes that allow us to grow better, fresher, and higher quality mushrooms.

Pictured here is the completion of the third Warwick expansion. Finished in 2016 making it the largest single site mushroom growing complex in the western hemisphere.

In 2016, Governor Hogan recognized Warwick for being a positive force in Maryland.

AMI Executive Director, Rachel Roberts, greets USDA Secretary Sonny Perdue at the Phillips Mushroom Farms packing plant.

Secretary Perdue takes part in a business round table talk with members of the mushroom industry. (From left to right) PDA Deputy Secretary Cheryl Cook, USDA Secretary Sonny Perdue, AMI Communications Director Lori Harrison, and U.S. Representative Chrissy Houlahan.

Secretary Perdue and Rep Houlahan with the entire Phillips family. The second, third and fourth generations are present.

Phillips General Manager, Jim Angelucci, explains the current challenges the mushroom industry faces. American Mushroom Institute Executive Director, Rachel Roberts, listens in.

Jim Angelucci exlpains the growing of the Agaricus mushroom to U.S. Rep Chirssy Houlahan.

Secretary Perdue and Representative Houlahan receive a short tour of the Phillips Mushroom Farms packing plant from the window overlooking the plant.

Head Grower for Exotics, Peter Gray, explains exotic mushroom growing to Secretary Perdue and Rep Houlahan.

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