Business Details
47 Years
experience
Your Trusted Landscaping and Garden Center in Northern New Jersey
Stone Mill Gardens is a family-owned and -operated business that has served Northern New Jersey since 1979. Originally established as Michael Duffy Landscaping, the company expanded its offerings to include a seasonal garden center and bulk mulch production. Located in Washington Township, our 45-acre property houses greenhouses growing thousands of plants and a facility producing premium hardwood mulch. Our team of certified professionals provides landscaping design, installation, and maintenance services while offering expert advice to homeowners. We prioritize personalized service, combining decades of industry experience with hands-on expertise in horticulture and landscape architecture. Our commitment to quality extends to our in-house production of mulch, ensuring premium materials for both commercial projects and retail customers.With three generations of the Duffy family actively involved, we maintain a focus on community engagement through seasonal events and educational workshops. Our staff's extensive knowledge in plant selection and landscape design helps customers create sustainable, aesthetically pleasing outdoor spaces. We serve Bergen County residents with weekday hours from 8 AM to 5 PM and Saturday availability until 4 PM. Our reputation for reliability and craftsmanship has been built through consistent delivery of tailored solutions for residential properties.
Services
Landscaping Services
Garden Center
Mulch Sales
Seasonal Plants
Event Hosting
Details
- Year established: 1979
Highlights and features
- Family-owned since 1979 with three generations actively involved
- Certified landscape designers on staff with Rutgers University training
- In-house production of premium hardwood mulch using quality materials
- Seasonal workshops and private event hosting capabilities
- Knowledgeable team with decades of combined landscaping experience
What people say
Knowledgeable staff
Quality plants
Excellent mulch products
Family-friendly atmosphere
Helpful design advice
Services
Landscaping Services
Our professional team creates custom outdoor spaces with hardscaping, planting beds, and lawn installations. We offer complete design-build services for patios, walkways, and seasonal decorations. Certified designers combine technical expertise with artistic vision to transform residential properties.
Garden Center
Seasonal retail location offering thousands of plants grown in our greenhouses. Carries perennials, annuals, and fall decorations like mums and pumpkins. Knowledgeable staff provides planting advice and garden maintenance tips to homeowners.
Mulch Sales
In-house production of premium hardwood mulch in natural brown, dyed black, and cedar varieties. Available for delivery or pickup with volume pricing. Used in our professional installations and sold to residential customers for DIY projects.
Seasonal Plants
Extensive inventory of seasonal flowers and plants for spring, summer, and fall displays. Includes annuals, perennials, and holiday decorations. Staff assists with plant selection based on sunlight requirements and soil conditions.
Event Hosting
Hosts workshops, birthday parties, and bridal showers at our Washington Township location. Offers planting parties, flower arranging classes, and private events with BYO options. Includes refreshments and expert-led activities for groups.
People
Mike Duffy
Owner & Founder
Mike founded Stone Mill Gardens in 1979 after starting as a landscaper. With over 40 years in the industry, he oversees operations while sharing gardening expertise with customers. Lives in Midland Park with his wife Beverly and six children.
Sean Duffy
Landscape Designer
Mike's youngest son Sean manages landscape design projects. Certified by Rutgers University in plant identification and design, he works on-site with clients to create customized outdoor spaces while maintaining hands-on involvement in daily operations.
Millie Duffy
Customer Service
Millie interacts with customers during Saturday visits, providing friendly assistance at the garden center. Known for her playful personality, she helps with plant selection while keeping staff and visitors entertained with her energetic presence.
Questions
What landscaping services do you offer?
We provide complete landscaping services including design, installation, and maintenance. Our certified designers create custom outdoor spaces with hardscaping, planting beds, and seasonal decorations for residential properties.
What garden center hours should I plan for?
Our garden center operates Monday through Saturday from 8 AM to 5 PM, and Sundays from 9 AM to 4 PM. Hours may vary seasonally, so we recommend calling ahead during inclement weather.
Do you sell mulch to homeowners?
Yes, we produce premium hardwood mulch available in natural brown, dyed black, and cedar varieties. Mulch is available for delivery or pickup with volume pricing options for residential customers.
Can I host events at your location?
We host seasonal workshops, birthday parties, and bridal showers. Our facility accommodates planting parties, flower arranging classes, and private events with refreshments provided by Stone Mill Gardens.
What payment methods do you accept?
We accept major credit cards and cash payments for landscaping services, mulch orders, and garden center purchases. Payment arrangements for larger projects can be discussed with our office staff.
