With a combination of Andrew and Priscilla’s expertise and those of their professional subcontractors and crew members, Professional Landscape Associates has a wealth of experience, skills, and knowledge at their fingertips.

With an ever changing climate in the landscaping business, the landscape team of Professional Landscape Associates is ready to bring you an excellent result that you will cherish through the years.

Professional Landscape Associates

Why Work With Us

Andrew J. Brennan


Andrew J. Brennan, the Proprietor of Professional Landscape Associates, has deep roots in the Lehigh Valley. He was born and raised in Cetronia, went to Parkland High School. He attended and graduated from Kutztown University in Public Relations.

After working for Primex Centers as the distributor’s rep of Horticultural Products, Andrew learned the inner workings of the landscape trade, locating and distribution of materials and people behind them. He worked there until 1986, when he decided to start his own business. In 1991 he moved the business to its present locale in Heidelberg Township.

Through the years, Andrew continues to work hard and build his business gradually and diligently. He worked on growing his customer base, allied himself with his key contractors and suppliers, and established himself as a local landscape contractor. Andrew is a registered PA Contractor, a member of the Lehigh Valley Chamber of Commerce; Northern Lehigh Chapter of the chamber; and a charter member of the PA Farm Bureau.

Priscilla Davies Brennan

Landscape Designer

Priscilla, Landscape Designer and Site Manager of Professional Landscape Associates, also grew up in the Lehigh Valley. After graduating from William Allen High School, her education continued on at Gettysburg College then to University of California Santa Cruz.

She acquired her undergraduate degree in Biology with an emphasis on the environment. She then acquired a Master Gardening Certification in Organic Gardening. She worked on an organic vegetable farm in Vermont followed by getting her Masters of Art in Landscape Design from Conway School of Landscape Design, in Massachusetts. Upon returning to the Lehigh Valley in 1983, she worked at Stahley’s Nursery in Schnecksville for 12 years as their Landscape Designer. She joined Andrew with Professional Landscape Associates full time in 1998.

Priscilla has been an active member of her community. She is the Vice Chair of Heidelberg Township Planning Commission and Chairperson of Heidelberg EAC since 2010. A member of Le Tip of Lehigh Valley, an organization of 68 members they exchange business tips at their weekly meetings. Her public appearances have included teaching classes at YWCA, Cedar Crest College Women’s center and LCCC and speaking at various Garden Clubs, SOTA Showcase Houses and AAUW.

Priscilla designs, estimates, sells, supervises and oversees the implementation of the projects and ongoing maintenance. A “sage” of Horticulture she attends seminars and stays current with 21st century Landscape Design ideas and trends.