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Custom Landscape Architecture in Lambertville
John Morgan Thomas Landscape Architects is a design and consulting practice focused on artful and environmentally responsible landscape architectural solutions for public and private clients. Our small firm specializes in creating carefully-considered, well-crafted designs that respond to both client needs and the natural/cultural environment. With over 40 years of experience, we prioritize regional sensitivity, incorporating native plants, local materials, and historical context into every project. Our hands-on approach ensures principal involvement throughout the design and construction process, with field visits integral to successful implementation.

We serve New Jersey and Pennsylvania, working on residential, institutional, and large-scale public projects including parks, trails, and historic landscapes. Our commitment to sustainability emphasizes practical solutions through appropriate plant selection, quality materials, and maintenance-conscious designs that align with client resources. Collaboration with clients and other professionals remains central to our process, ensuring landscapes that respect ecological systems while meeting functional expectations.
Services
Landscape Design Garden Design Stormwater Management Historic Preservation Public Park Planning Trail Development Planting Design Master Planning
Highlights and features
  • Principal with 40+ years of landscape architecture experience
  • Specialized expertise in regional plant selection and ecological design
  • Hands-on approach with field visits during construction implementation
  • Proven track record with historic landscape preservation projects
  • Collaborative process emphasizing client-specific solutions
Associations and certifications
  • American Society of Landscape Architects (ASLA)
Services
Landscape Design
Creating custom outdoor environments that balance aesthetic appeal with ecological functionality. Our designs integrate regional materials, native vegetation, and sustainable practices to create enduring landscapes. We work directly with clients to develop solutions that meet specific site conditions and usage requirements.
Historic Preservation
Specialized restoration and adaptive reuse of historically significant landscapes. Our approach combines archival research with on-site analysis to maintain historical integrity while implementing modern sustainability standards. We've completed assessments and master plans for numerous heritage sites across the Mid-Atlantic region.
Stormwater Management
Implementing environmentally responsible drainage solutions that prevent erosion while enhancing landscape aesthetics. Our designs utilize natural topography and vegetation to manage runoff effectively, meeting regulatory requirements while creating functional green spaces that benefit local ecosystems.
Public Park Planning
Developing comprehensive park master plans that balance community needs with environmental stewardship. Our process includes site analysis, community engagement, and creation of multi-use spaces that incorporate trails, recreational areas, and native habitat restoration while ensuring long-term maintenance viability.
Planting Design
Curating plant palettes that thrive in specific microclimates while creating seasonal visual interest. Our expertise in horticultural science ensures plant selections that provide ecological benefits, require minimal maintenance, and create beautiful, sustainable landscapes tailored to each property's unique conditions.
People
John Morgan Thomas
Principal Landscape Architect
ASLA-certified landscape architect with over 40 years of experience specializing in regional design. Graduated from Penn State University with a BS in Landscape Architecture after studies at Conway School and University of Vermont. Former community planner and associate at Carter van Dyke Associates. Licensed in NJ and PA, served as NJ ASLA President.
Ada Thomas
Landscape Designer
Experienced designer with expertise in public space development and ecological restoration. Holds MLA from Harvard Graduate School of Design. Previously worked with Nancy Owens Studio in NYC on urban parks and housing projects. Currently manages large-scale public park commissions in New Jersey.
Ashley Stoop
Landscape Designer
Specializes in ecological restoration and interdisciplinary collaboration. MLA graduate from Rutgers University with experience in site analysis and master planning. Managed tree inventory projects and developed planting plans for diverse clients. Focuses on sustainable solutions that balance human needs with environmental conservation.
Questions
What areas do you serve?
We primarily work in New Jersey and Pennsylvania, including Bucks County, Hunterdon County, Princeton, and Philadelphia areas.
What project types do you handle?
We specialize in residential gardens, institutional landscapes, historic preservation, public parks, and trail systems of various scales.
How do you incorporate sustainability?
We use native plants, local materials, and water management systems while designing for long-term maintenance feasibility and ecological balance.
Is the principal involved throughout projects?
Yes, John Morgan Thomas directly oversees all projects and maintains client communication throughout the design and construction phases.
Do you work on historic properties?
Yes, we have extensive experience with historic landscape assessments, preservation plans, and adaptive reuse projects across the Mid-Atlantic region.