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Proven Winners® Certified Landscape Professionals

Landscape Division Manager and Senior Landscape Architect

TerraCare, Inc.
Main Office:
374 Kanawha Salines Drive
Charleston, WV 25306
Phone: (304) 925-4751 / (800) 249-4753  / Field Office: (859) 224-0033
White Sulphur Springs, WV 24986
Phone: (800) 249-4753

Jason Testman, PLA, LEED AP BD+C is the Landscape Division Manager and Senior Landscape Architect at TerraCare, Inc. in Charleston, WV.

Since Joining TerraCare in 2006, Jason designed the landscapes of some of the most prestigious landmarks in West Virginia including the Summit Lodge at the Greenbrier Sporting Club, The Willows Neighborhood at the Greenbrier Sporting Club, The Annual Flower Beds at the West Virginia Capitol Complex, West Virginia University President’s Home, and the Mardi Gras Hotel and Casino. Jason also designed dozens of high-end resort homes within the 12,000-acre Greenbrier Sporting Club Resort.

Jason is chairman of the West Virginia State Board of Landscape Architects and a Board Member of the West Virginia Nursery and Landscape Association.

TerraCare, Inc. is a West Virginia based company serving the entire state of West Virginia, with focus on Charleston, Morgantown, and White Sulphur Springs, WV.  TerraCare is a Landscape Architecture, Design Build, Construction, and Grounds Maintenance Company.  Their signature landscape and grounds maintenance clients include West Virginia University, The Greenbrier Sporting Club, Charleston Area Medical Center, Dow Chemical, and Toyota Motor Manufacturing.


Poplar Point Studio, NY
3901 Long Hill Road
Moravia, NY 13118
(607) 645-3034
General Email

Poplar Point Studio was founded in 2008 and has slowly evolved into the premier landscape design & fine gardening company in the Finger Lakes area of NY.  Services are focused around gardening and the art of making outdoor spaces beautiful. From garden design, installation, renovations garden maintenance, seasonal containers, holiday decor, workshops, garden coaching and more - they are uniquely positioned to help make backyard dreams come true.  They collaborate with the areas best landscape technicians, from irrigation and hardscape experts, carpenters to outdoor audio technicians to create masterpieces for their clients.

Owner, Leigh McGonagle, has a Landscape Architecture degree from Cornell University and worked in the industry for over 15 years before transitioning this to a full time business in 2017.  Growing up in a rural farming town, combined with the influence of her parents both being entrepreneurs has blossomed into a career that she loves.  Leigh is an active member in the New York State Nursery and Landscape Association, sitting on the state board for 2 years, Vice President of her local chapter for 3 years and is a Certified Nursery & Landscape Professional (CNLP).  She is currently working on a "Career of Choice" initiative to promote careers in the green industry across the state.  She also gives gardening and business related lectures in the local area.


Inside Out Design, LLC
100 Old Georgetown Road
Frankfort, KY 40601
(502) 695-7020

Inside Out Design is a turnkey landscape and hardscape design and installation firm creating innovative, meaningful, outdoor spaces in Central Kentucky with a lifetime of experience. Inside Out Design, LLC is the recipient of Landscaper of the Year Case construction and Total Landscape Care National 2014, PLANET Stewardship Award 2014, Business of the Year Frankfort Area Chamber of Commerce 2016, and Frankfort’s Favorite Landscaper 2017 and 2018.

Andrea owns Inside Out Design and runs the business with her husband, Michael Mueller who has been in the horticulture industry nearly 30 years. Andrea is a native Kentuckian and 2003 magna cum laude graduate of the University Of Kentucky College Of Design with a Bachelors of Arts in Design. Her dad, who founded one of the largest nurseries in Kentucky and where she and Michael met, raised her in the horticulture industry. She is the first and only APLD certified landscape designer in the state of Kentucky and is currently Education Chair. Her specialties are creative design solutions for residential and commercial complete outdoor space design, hardscapes, and landscapes with an emphasis on ecological solutions.


(Pictured with Richard Rahm)

Rahm Landscaping Inc.
18630 Hardt Road,
Wildwood, MO 63038
Office: 636-458-4646
Mobile: 636-236-2644

Rahm Landscaping Inc. is a small family owned and operated landscape company capable of large scale projects. Because of this, they offer a unique experience combining the friendly small business service clients want with the professionalism and knowledge they need. Rahm Landscaping's focus is to work with clients step by step to provide alandscape design that best fits their wants, needs and lifestyles.

Rahm landscaping was founded by Richard Rahm Jr. over 45 years ago. His love for horticulture began in his early years as he helped on his grandfather's farm in Creve Coeur, Missouri. In the 1960s the area was rapidly changing. Farm land transformed into large neighborhoods and estates, and the need for landscaping grew. In 1974 he decided to put his passion to work and start Rahm Landscaping. After many years of successful business, he started a small tree nursery on the family farm, later moving in 1987 to the current location in Wildwood, Missouri. Since then, in 2014, Richard has been joined by his son Jordan Rahm who is currently studying landscape design and horticulture. Jordan shares his father's same passion for nature and horticulture. Together they have designed, installed, and maintain gardens that consistently earn awards from local garden clubs and
townships. As a result of their high standards, Rahm Landscaping obtains nearly 95% of all work from previous customer referrals.

Projects range in size and complexity from large quantity, large caliper tree planting and transplanting for land developers and estates, to perennial and annual planting for residential and commercial clients. Rahm Landscaping offers a wide range of expertise including landscape design and consultation, plant selection, landscape installation, large tree planting, tree and shrub transplanting, perennial gardens, natural stone hardscape features, garden maintenance, commercial snow removal, finish grading, and turf installation.

With 45 blessed years in the landscape industry, Rahm Landscaping looks forward to many more successful years of business.


Owner, President

Gardens by Barbara Conolly, Inc.
PO Box 1962
N. Falmouth, MA 02556
17 Wintergreen Rd
Mashpee, MA 02649
(774) 302-4876

Barbara Conolly is Owner and President of Gardens by Barbara Conolly, Inc., a garden design, installation and management company specializing in sustainable landscape care.  She also serves as the firm’s chief designer.  Barbara’s teams serve high-end residential landscapes across the Cape and the South Shore.  

Barbara is also co-designer for the City of New Bedford and the New Bedford Historical Society working on the design for Abolition Row Park.  The urban neighborhood park serves to tell the story of Frederick Douglass and other abolitionists of his time.

Barbara teaches two courses on the Cape.  One is a 14-class series to help Cape Cod landscapers increase their knowledge to help them pass the exam to earn their Massachusetts Certified Landscape Professional designation.  The other is a seven-class series teaching homeowners and professionals how to build and maintain a sustainable landscape.  She is often asked to teach or lecture for the Cape Cod Landscape Association, Hyannis Country Gardens, and various garden clubs and museums. Her horticultural articles can be seen in local magazines including Home Remodeling and Spring Home and Garden.

Barbara previously served as Cape Cod Branch Manager for Greenscape Land Design, Inc., serving both residential and commercial clients across the Cape, including Brookside Condominium Assoc, and as Manager of Grounds and Horticulturist for Chatham Bars Inn where her projects included bringing color back to the inn’s gardens and designing their wedding staircase, Gazebo Bar Space, and their Cottage grounds.

Barbara was a Graduate Fellow at Cornell University where she studied Public Garden Leadership and earned her master’s degree.  Her original research in salt tolerance of Hydrangeas and her original research in measuring marketing success in non-profits were both published in professional and scientific journals.  An Honors Scholar, Barbara earned her Bachelor of Science degree, cum laude, in Plant Science/Horticulture, also at Cornell.  

While earning her degrees, Barbara interned at Naples Botanical Garden, Naples, FL, Cornell Botanic Garden (formally Cornell Plantations) Ithaca, NY, and The George Eastman House Gardens in Rochester, NY.  During these internships she gained firsthand knowledge and experience in several areas of public garden operations including education, grant writing, sustainable garden practices, event planning, and historical landscape preservation.

Barbara’s Certifications include Massachusetts Association of Landscape Professionals, Massachusetts Certified Landscape Professional #1605, International Society of Arborists, Certified Arborist NE-7199A, Landscape for LifeTM, Certified Trainer, and Proven Winners, Certified Landscape Professional.

She is a member of the Ecological Landscape Alliance, Cape Cod Landscape Association, International Society of Arboriculture, Cape Cod Women's Association, and Falmouth Chorale.  

California Certified Nursery Professional (CCNP)

Schnetz Landscape
427 Venture Street
Escondido, California 92029
(760) 591-3453

Robby grew up in the horticulture industry and has worked in many industry capacities throughout his career. After graduating with a Business degree from Oregon State University, he expanded on his passion of plants and landscaping by working on Mackinac Island for Proven Winners Certified Landscape Professional, Jack Barnwell. Robby began as a maintenance employee then grew into the position of foreman for the maintenance department. He was responsible for overseeing the maintenance, trimming, fertilization, and pest management for over 30 properties on the Island, more than 150 hanging baskets down Mackinac Island’s main street, and hundreds of garden pots and boxes. His experience on the Island inspired him to take what he learned back home to San Diego, CA.

After this unique, hands-on experience with annuals, perennials, and shrubs, and with one of the best landscapers in the country as a mentor, the move back to San Diego offered new opportunities. He immediately began working as a sales associate for a local nursery, Armstrong Garden Centers, and held the positions of department head for Green Goods, Houseplants, and Color, and Assistant Store Manager. In every department it was clear that the Proven Winners plant material had exceptional shelf life and attracted the most attention. Sharing his landscape experience and knowledge of Proven Winners plants lead to an enthusiastic customer base of Proven Winners enthusiasts. 

 Robby successfully completed Armstrong’s Management Training Program, earned his California Certified Nursery Professional (CCNP) designation, and complemented his knowledge of Proven Winners plants, and his Upper Midwest experience, with a broad range of Western plant materials and landscapes. 

Robby is now proud to be with Schnetz Landscape, Inc., recognized as one of Southern California’s premier estate and high-end residential landscaping firms. His responsibilities include the company’s software process, procedure improvements, and estimating support.

Schnetz Landscape, Inc. has served the San Diego region since 1982 and excels in the design and construction of outdoor kitchens, fireplaces, water features, large boulder placement, large tree planting, irrigation renovations, retaining walls, natural meadows, vegetable gardens, and creative landscapes.


KP Landscape
10384 West Shore Drive

Charlevoix MI 49720
(231) 547-4090

Kevin Pearsall is the owner of K.P. Landscaping Inc. in beautiful Northern Michigan. Nearly four decades of experience has made Kevin and his team proficient in Excavation, Landscaping, Irrigation, Hardscapes, Water Features, Golf Course Installation, and Outdoor Train Displays. His company prides itself on customer retention. This is demonstrated by his contributions over the past 18 years in the development and maintenance of Castle Farms, a large and popular wedding venue destination on the south side of Charlevoix. The owners of Castle Farms, Richard and Linda Mueller, have relied on K.P. Landscaping’s services year after year, evidence of Kevin’s well-rounded grounds management experience. Kevin brings excitement and enthusiasm to the company’s flower container creations, garden installations, and shrub designs. This has led him to work on various landscaping projects with Proven Winner consultant Jack Barnwell for the last 5 years.

Account Representative

Ideal Landscape Group
6252 Olsen Road

St. Louis, MO 63129
Office:     (314) 892-9500
Direct:     (314) 701-4646

Gunner brings more than 10 years of experience in the landscape industry to the team at Ideal Landscape Group.  He first developed his interest in the green industry while in High School working in the school greenhouses and eventually operating his own greenhouse from home growing vegetable and native plants.  Gunner is an Illinois native who graduated in 2016 from Murray State University in Murray Kentucky with a Horticulture/ Agriculture Science Degree.  After graduation he moved to the St. Louis area to pursue his career in the Green Industry starting off as a Horticultural Representative, as well as working for Monsanto conducting crop research. Eventually, Gunner found his way back outdoors in the commercial landscape industry as an Account Manager. Involved in several Horticulturally related Clubs and Volunteer groups around the St. Louis Metro Area, Gunner continues to spread the word of the best horticulture practices as well as how to incorporate beneficial plant material to every setting of your landscape.

Founded by current president Dave Buckel in 1985, the company started from a one-man operation in the early days. As demand for commercial landscape projects increased, Dave’s Lawn & Landscape Services decided to switch its focus from residential to high-end grounds maintenance services. After our capabilities and credentials steadily grew, the need arose to create a brand that our customers could identify with and one that could take us into the future. In 2003 we became Ideal Landscape Group and continue today to operate as one of St. Louis’ most trusted landscape management company. Ideal Landscape Group is based in south St. Louis County. We are a commercial landscape company offering professional landscape design, construction, and property maintenance services. Ideal Landscape Management partners with approximately 250 commercial clients annually to provide contractual landscape management services. Ideal Landscape Group is the parent company of Ideal Landscape Management, Inc. and Ideal Landscape Construction, Inc. BETTER FROM THE GROUND UP isn’t just a slogan it’s truly the standard for every employee at Ideal Landscape Group. From the receptionist who answers the phone to our account managers and laborers in the field, our employees seek to form and maintain honest partnerships with every client. We know that’s what it takes for you to believe in us and know that Ideal Landscape Group is truly the best choice – from the inside out and the ground up.

MLA, VTLA, Senior Landscape Architect, Garden Designer

Julie Moir Messervy Design Studio
17 Rockingham Street, Unit E
Bellows Falls, Vermont 0510
Office: (802) 242-8200

Erica is a lifelong gardener and plant specialist, first trained in the family garden design business, The Compleat Gardener. She obtained her Masters of Landscape Architecture at Cornell University with a specialization in Ecological Design and a focus in Public Garden Management. She continues to curate botanical collections with ecology in mind and promotes restorative practices in every installation.
She now works for JMMDS (Julie Moir Messervy Design Studio) out of Bellows Falls, Vermont. In addition to master planning and plant specification services for private clients, Erica’s design work at JMMDS includes parks, arboreta, museums, memorials, cemeteries, children’s gardens, and academic and corporate campuses around the country. Her projects include the re-envisioning of the Rosaceous Collection at the Arnold Arboretum, the expansion of the cremation garden of Spruce Knoll at Mount Auburn cemetery, yearly horticultural evaluation and recommendations for the Toronto Music Garden, and the development of a modern English garden at the Frederik Meijer Gardens and Sculpture Park.
Erica is also a garden writer with contributions in Horticulture, Fine Gardening, The Arnoldia, SO Vermont Living, Stratton, Vermont Life, and Manchester Life magazines.

Founder and President

Sarah’s Cottage Creations
14556 Manning Trail N
Stillwater, MN 55082
(651) 261-6409

Sarah Buerkley is truly passionate about the garden! She is the founder and president of Sarah’s Cottage Creations - a Minnesota based garden design, maintenance and installation company.

Her energy level, positive attitude and commitment to doing things right the first time have helped to grow the business over the years. Her personality and design style have been noticed by producers like Edelman Productions to star in 4 successful Landscape Smart episodes and 3 Curb Appeal episodes all airing on the HGTV network.

Sarah graduated from the University of Wisconsin STOUT with a degree in Management and Merchandising. She continues her horticulture education through classes at the University of Minnesota, Landscape Arboretum and MNLA. She has served the community from 2002-2007 as a Washington County Master Gardener, teaching the public the wonders of gardening and inspiring people to have fun in the garden! She has led a local garden club from 2002-2005 with knowledge and excitement of performing gardening tasks for the community.

Sarah’s Cottage Creations is a Star Tribune Beautiful Gardens Award winner, multiple winner of the Gertens Wholesale Landscaper’s Challenge Award, as well as multiple project awards from the Minnesota Nursery and Landscape Association.



Rob’s Gardens      
5505 Susan Way

Carmichael, CA 95608
Phone: 916-719-2336

Rob’s Gardens was born out of the sheer passion for the earth and the love of working with the many foundational elements that is takes to create a beautiful residential landscape. From landscape design and installation to fencing, irrigation, lighting and hardscape, Rob’s Gardens utilizes 15+ years’ experience with inspiration and creativity to work with clients in achieving realistic and natural simplicity in their gardens.  



Milosi Landscape Company
Hendersonville Office - 655 New Shackle Island, Hendersonville, TN 37075
Nashville Office - 677 Vernon Avenue, Nashville, TN 37209

Phone: (615) 264-0577     
Mobile: (615) 979-4889

Bill Petry’s love of the outdoors began in childhood while he was exploring the Catskill Mountains in Upstate New York. His passions for nature and exploration included fly fishing and hunting. After moving to Tennessee as a young man, Bill combined his dedication for the outdoors with his interest in golf and began working in golf course construction at Pine Creek Golf Course located in Mt. Juliet, TN.  Always curious, Bill learned about irrigation, turf health, chemical use, mowing, pruning, planting, and all the equipment needed to take care of the various aspects of a landscape. Because of his dedication to every aspect of the business, Bill was promoted to Assistant Superintendent.

Bill later joined Milosi, a luxury outdoor landscaping company in Hendersonville, TN, to supervise irrigation and spray departments. With his commitment to growth and innovation, he was promoted to Operations Manager, overseeing all of the maintenance operations and crew members. Bill currently serves as a Designer at Milosi, where his love of landscapes and people has allowed him to flourish.  He continues to be a learner and is always looking for ways to improve himself, his team members, and the outdoor construction community.


Windridge Perennials & Landscaping
7364 Adams St
Zeeland, MI 49464
Phone: (616) 638-4527

Windridge Perennials & Landscaping is a retail/wholesale nursery, landscape design and installation firm.
Windridge Perennials & Landscaping began in 2000 as a small retail plant nursery. The owner, Jeremy Windemuller was an ambitious high school student with a passion for business and plants. Growing annuals, perennials, and shrubs from liners helped Jeremy learn the plants needs and how to best utilize them in the landscape. “Knowing the plants and how they grow is key to producing a great long-term landscape.”

Jeremy has a passion for Proven Winners plants and especially the perennial line. As a former trials manager for Walters Gardens Inc. Jeremy has had the opportunity to conduct trials on the Proven Winners line of perennials ever since the partnership between Walters and Proven Winners began. It was a great opportunity to learn about the brand and the great plants that make Proven Winners the #1 plant brand in the world.

After years of working full time for Walters Gardens and running a business Jeremy made the decision to focus on the nursery and landscaping business. Over the past few years, the nursery has greatly expanded to offer several hundred varieties of perennials and shrubs for retail and wholesale sales. The demand for new and unique plants has been strong and I am excited to see so many great new plants being introduced. The Proven Winners perennial line has expanded greatly over the past 10 years.

Windridge Perennials & Landscaping has had the pleasure to partner with Proven Winners to design and install the new gardens at the Beekman 1802 farm in Sharon Springs NY that began in 2019. We look forward to helping this project come together over the next few years.

Owner, Principal Designer
Second Nature Designs
P.O. Box 751
Edgartown, MA 02539
Martha’s Vineyard
Office: (508) 627-6594


“A beautiful landscape begins with an innovative design” has been Renee’s philosophy since she planted her very first professional garden in 2003. She could envision what it was going to look like in a few months; the infused colors, textures and shapes would fill the space in nicely.

Garden Design was very similar to the design principles she had learned from attending the Floral Design Institute in Seattle, Washington to become a floral designer. Principles, that she had been practicing in the 6 years prior to starting her gardening business. The most challenging part of gardening, which she learned very quickly, was that the gardens were ever-changing. They evolved and morphed into an entity that her earlier vision didn’t grasp. Some plants thrived and some well, just didn’t. She spent the next 5 years up to her neck in compost, attending every class and seminar she could find on Gardening. She developed a style of gardening that even if she were to try to mimic one garden to the next, she couldn’t. It was all about the space she was in, how it felt and how it played a roll in the rest of the property. Renee’s eyes would quickly gaze over to the path leading to the garden, or the mulched area with a few uninspiring shrubs, the undefined lawn area and the potting shed plopped right in the middle of everything with no rhyme or reason. Every single time that would happen on a property, she got the urge to merge all the spaces and create a cohesive design that made all the elements intertwine with purpose.

In 2008, Renee headed back to school and attained a dual certificate in Landscape Design at the acclaimed Landscape Institute of Harvard University (formally Radcliffe) and The Boston Architectural College. Her study focused on Landscape Preservation and History, Horticulture, Design and Construction Management.

Since graduation in 2012, she has expanded her business and followed through with the same design intents she did in 2003, but with an eye on the whole picture rather than just a space. A design that truly feels like, Second Nature. Second Nature Designs now has clients throughout Martha’s Vineyard and includes Landscape Design / Design-Build, Fine Gardening, Container Design, and Garden Coaching for residential or commercial clients on the island of Martha’s Vineyard.

Grounds Superintendent

310 North Main Street
Berea, KY 40404
Office: (859) 985-3840
Direct:    (225) 337-3217

Eric Harshman is a native of Bluffton, Indiana and currently resides in Lexington, Kentucky  He is a graduate of Indiana Tech University (Business Administration/Marketing) & Rutgers University (Golf Turf Management) Eric joined the Berea College Facilities Management Department, (Berea, KY) in 2015 becoming the Grounds Superintendent, overseeing all college grounds, including the Berea College Athletic Complex and its facilities.
Prior to joining Berea College, Harshman has had extensive career in ground management, most notably in the sports turf world. Harshman’s notable stints include working as the Assistant (training program) at Hurstbourne Country Club in Louisville, Kentucky.  Eric also served as the Assistant Sports Turf Manager at Louisville Bats Baseball Club, Louisiana State University, and at the University of Kentucky. Right before joining Berea College, Harshman was also the Head Groundskeeper for the Lexington Legends Baseball Club.
Harshman’s extensive experience also come with multiple accolades for his hard work. In 2012 the LSU Softball Field was awarded the College Softball Field of the Year. In 2014 at the University of Kentucky, they were also award the Softball Field of the Year. Already in his short tenure at Berea College, the Berea College Soccer Field has been named the Field of Excellence Award winner in 2017 and 2018 as well as continuing efforts to maintain the distinction of Tree Campus USA (since 2008).  In 2019 Berea College was honored with the designation of Bee Campus USA
Harshman has been happily married for 14 years to his wife Katie. They have three children, Emma (9), Elyse (6), and Felix, (4). In his spare time, Eric enjoys running and spending time with his family.



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