Mission Statement
The Mid-Atlantic Horticultural Therapy Network is dedicated to fostering the awareness and application of horticultural therapy as a dynamic professional practice in the Mid-Atlantic region through education, communication and networking.
Meet our MAHTN Team!
Gerry Sherman - NY
President
Gerry gleaned the therapeutic benefits of horticulture first hand, taking her from her own garden to a new career she cherishes. She received her Horticultural Therapy Certificate from The New York Botanical Gardens in 2018, leading to work with people of all ages and abilities.
Gerry practices Horticultural Therapy at NYU Langone's Rusk Rehabilitation - proudly utilizing nature, empathy and adaptability to aid in recovery and respite for both her patients and their loved ones. Ever thankful for MAHTN, she collaborates with others towards greater understanding, expansion, and opportunities in the HT/TH field. Wherever she is, Gerry shares her passion and dedication for this vibrant field of plants and people.
Rich Matteo - PA Vice President, PA Rich attended Temple University and interned at Bryn Mawr Rehab Hospital under the supervision of Pam Young HTR. He attained AHTA professional registration in 2019. He then began the program at the Overbrook School for the Blind. Currently, he works with students with visual impairments and special needs age 3 to 22. With students, volunteers and interns he manages numerous sensory, vegetable and floral gardens as well as the largest orchard in the city of Philadelphia. He runs an on campus floral shop and provides opportunities for internships. | Emily Blumstein - NJ Vice President, NJ Emily is a graduate of the Rutgers University’s HT Certificate Program and is working towards AHTA certification. She is a dedicated public school special education teacher, where she leads a Life Skills program with a unique, hands-on approach. She thoughtfully integrates HT/TH into her curriculum, pre-vocational education, and SEL for her students. She strongly believes HT supports student development, engagement, and independence. She is currently studying Holocaust and Genocide Education through Kean University, deepening her understanding of historical trauma and resilience—important themes that inform her work as an educator and therapist. As a passionate member of MAHTN, she looks forward to fostering community through in-person programming and event planning. | Lori J. Sherman - NY Vice President, NY In her teens, Lori combined her passion for gardening with volunteering, starting a TH program at a local rehab hospital. She hadn’t heard of TH yet, but instinctively knew that nature was an important part of healing. After working in business development and marketing, she sought a career change that would encompass gardening and helping others. When she discovered the TH program at NYBG, it was full speed ahead. Lori interned at the Bronx VA THRIVE program at NYBG’s Edible Academy. She found working with Veterans so rewarding that she continues to volunteer at THRIVE. Currently, Lori is working at several facilities serving people with dementia and other memory challenges and has created her own company, “Floriatrics,” with the goal of serving a variety of populations in both group and private settings. |
Betty Guise - PA Board Secretary Betty’s experience as a social worker and interest in exploring nature’s “life lessons” led her to the Certificate program in HT at Delaware Valley University and creation of an HT program, “A New Leaf.” The program works with people who are grieving from loss, to find a way forward through personal growth by working with plants, flowers, and the study of nature. Betty recognizes the value of the HT/TH field which provides people with the benefits of education, creativity, socialization, and personal support. | Bambi Orban - NJ Treasurer Bambi was led to HT after witnessing the benefits of exposure to nature while caring for two family members. When searching for a second career she found the description of HT in NYBG’s listing of classes, and it became clear that this is what her loved ones had experienced. She earned her certification in Horticultural Therapy at NYBG and now works with individuals with intellectual and developmental disabilities at Heritage Christian Services’ day habilitation sites, residents at the Jewish Home, as well as individuals at Marian’s House, a dementia and memory care day program. Bambi is a true believer in nature’s powers and delights in bringing HT/TH to those she serves. | Collie Turner - PA Member at Large Collie Turner, THP, is the Founder and Executive Director of the Veteran Service Organization, Heroic Gardens. Since 2018, the nonprofit has been bringing the healing power of plants and nature to Veterans across the Delaware Valley community. This award winning free programming includes in person horticultural therapy and since 2022, the organization has led a virtual program across the United States reaching as far as Alaska and Hawaii. In 2025, Heroic Gardens imagined and created a sunflower farm in Northeast Philadelphia, led by members of the Veteran community and all are welcome. Check it out here: www.heroicgardens.org |
Mikkele Lawless - NJ Newsletter Editor Mikkele is the Horticultural Therapist for Parker Health Group, working with residents in Assisted Living, Memory Care, Nursing Homes, and Adult Day Care, and leading intergenerational programs. She is also an instructor at the New York Botanical Gardens, teaching Therapeutic Horticulture for Older Adults. Through her work, she guides people back into relationship with the natural world—sparking moments of awe as they encounter nature’s everyday miracles. | Carolyn Vachani - PA Webmaster Carolyn is a lifelong plant and garden enthusiast, and a retired oncology nurse turned small biz owner. In retirement, she opened a small plant and garden shop in Ardmore, Pennsylvania to serve as a hub to bring the therapeutic benefits of horticulture to the public. Carolyn discovered HT/TH while discussing how gardening got her through the pandemic - with someone who turned out to be an HTR! She holds a certificate in Therapeutic Horticulture from the North Carolina Botanical Garden. | Lisa Lindvall - NY Social Media Manager Lisa brings her English gardening roots to life by promoting the healing power of plants and nature. As a horticultural therapist and landscape designer she has designed and developed transformative gardens and therapeutic programs in Manhattan and the Bronx - supporting early childhood to older adults, at risk youth and individuals with special needs and survivors of domestic violence and sexual abuse. |
Rooted in the Mid-Atlantic region, MAHTN has been growing connections since 2000. As a 501(c)(6) nonprofit, we are committed to educating, collaborating, connecting, nurturing, and inspiring through the practice of horticultural therapy. Our work brings together people and organizations to share knowledge, resources, and a deep appreciation for the healing power of plants and nature.