About Us

Mulkern Landscaping specializes in creating and maintaining outdoor living spaces and landscapes on Oahu. From simple garden landscapes to resort-style luxury outdoor living spaces, our team of expert landscaping professionals is dedicated to providing you with the most reliable, professional, and top-notch service. The Mulkerns’ nursery is located in Waimanalo and open to the public on Saturdays or by appointment. If you’d like to get to know our team before you purchase our services, attend a free monthly workshop at our nursery.

Over 40 Years of Expert Oahu Landscaping

In June 1975 Kevin Mulkern started his landscaping business with a tiny Datsun pickup truck, a mower and a few hand tools. He began with an 8 hour work week and a lot of time for surfing. Kevin's goal was to provide the best landscape maintenance service in the state. Soon after Kevin's wife Susan joined him in the business and there was a lot less time for surfing. From designing small commercial projects to maintaining 3 acre estates, Kevin's range of landscape skills and customer service is unparalleled. Over the years Mulkern Landscaping has worked for thousands of local customers and his hope is there will be thousands more.

Awards & Recognition

Mulkern Landscaping & Nursery has been recognized many times over the last 40 years for excellent work. Kevin Mulkern has been consistently featured on the radio, tv news and in the StarAdvertiser. In 2014 and 2015 Mulkern won Honolulu Magazine’s award for Best Landscaper. The company also received the Award of Honor in the 2014 Betty Crocker Landscape Awards from Scenic Hawaii. Mulkern Landscaping continues to have excellent reviews from our customers. The Better Business Bureau rated us A+ and Google and Yelp give us 5 Stars. Mahalo to all our loyal customers past and present for the kind words and nominations!

Our Team

Mulkern Landscaping & Nursery is proud of our many skilled, diligent team members. Our supervisors and managers represent the best of what our company has to offer. All of our employees are constantly working toward landscape industry certification and keeping up to date on their professional knowledge.

Kevin Mulkern


Kevin formed Mulkern Landscaping in 1975 after studying marine science and horticulture at Leeward Community College (LCC). A graduate of Kalani and LCC, Kevin has spent his life advocating for a landscape industry based on principles of sustainability and quality craftsmanship.  He actively volunteers as a Kuliouou/Kalani Iki Neighborhood Board member and for environmental issues.

  • Landscape Contractor C-27 3
  • Live Roof Certified Installer 2010
  • Certified Landscape Irrigation Auditor 1996
  • Former Certified Arborist 1993
Kevin Mulkern

Susan Mulkern

Vice President

The head of administration, Susan has over 40 years experience in the landscape industry.  A Punahou alumni and University of California, Los Angeles (UCLA) graduate. Susan usually handles initial consultations, accounting and business operations.  Kevin consistently credits his wife Susan with Mulkern Landscaping’s success because of her extensive office and bookkeeping knowledge.

  • Helped start company in 1975
  • Past President of Hawaii Guild of Professional Gardeners
  • Landscape Design Certified 1980
Susan Mulkern

Allen Griffin


Allen works in the office and out in the field assisting our staff and responding to customer concerns. He is a talented fixer, from sprinklers and ponds to landscape equipment. Allen is a University of Maryland alumni and long time west Oahu resident. He will attend the Landscape Industry Certified Technician (LICT) training for Irrigation this summer.  Come say hi to Allen Saturdays at our Waimanalo Nursery.

  • Joined our team in 2000
  • Landscape Industry Certified Technician (LICT) – Ornamental Maintenance 2015
  • Landscape Industry Certified Technician (LICT) – Irrigation 2017
  • Aquascape Pond Installation Certified
Allen Griffin

Dorothy Mulkern

Assistant Vice President

Starting September 2016 Dorothy will take an extended leave from Mulkern Landscaping to earn a master’s degree in landscape architecture (MLA) and in urban planning (MUP) at the University of Washington. Dorothy has been involved with the company since she was old enough to hold a shovel.

  • Permaculture Design Certified 2015
  • Landscape Industry Certified Technician (LICT) – Ornamental Maintenance 2015
  • UC Berkeley’s Summer Institute of Environmental Design 2014
  • UH Master Gardener 2013
Dorothy Mulkern

Industry Partners