On Saturday, September 13, the Garden Conservancy’s Open Days program invites garden lovers to explore five stunning private gardens in Bergen and Essex Counties. These hidden gems—rarely open to the public—offer a glimpse into the artistry, passion, and personal stories behind some of the region’s most captivating landscapes. The participating gardens are:
The Mountsier Garden, Nutley, NJ. This two-acre garden, cultivated for over two decades, is a testament to the collaboration between owners Silas Mountsier and Graeme Hardie and noted landscape designer Richard Hartlage. In September, enjoy the garden's lush tropicals and caladiums. Principally designed as a stroll garden, it offers numerous focal points, intimate seating areas, and impressive vistas. Drifts of variegated Hakone Chloa subtly soften the garden's architectural framework. A collection of small sculptures and artworks are thoughtfully placed throughout, adding delightful touches of humor and interest to this verdant space.
Our Little Arboretum with the Arch on Top, Montclair, NJ. Drawn by proximity to a train station, the owners discovered a circa-1750 home tucked behind a remnant of old-growth forest—once part of a 500-acre Dutch farm. Surrounded by manicured lawns near Anderson Park, their wild half-acre sparked curiosity. They removed one mulberry tree at a neighbor’s request, then embraced stewardship of antique trees and added native, deer-resistant plants. Stones buried for centuries were unearthed to frame the house and a bluestone patio. A rustic gate opens to a hidden saltwater pool, designed to reflect towering evergreens. A 25-foot bamboo arch, now covered in vines, links a preserved pine stump to a cemented trunk—an evolving sculpture and sunset-viewing frame, born of collaboration between artists, arborists, and time.
Beau Jardin, Wyckoff, NJ. Landscaping and garden design run deep in the owner’s roots—both grandfather and father were Master gardeners, and that legacy flourishes here. Inspired by years of travel and meaningful encounters, each idea was carefully cultivated before being brought to life. Every corner of the property is thoughtfully used, woven into a harmonious tapestry of color, texture, and tranquility. The garden reflects not just a love for plants, but a lifelong devotion to creating peaceful, artful spaces that invite reflection and joy.
Serenity Cove, Wyckoff, NJ. A newspaper listing titled “Own Your Own Island” sparked a vision: a home surrounded by water and nature. The first landscaping project introduced over a hundred ornamental grasses, adding movement and drama along the quiet lane. Crossing the bridge, visitors are greeted by a majestic southern magnolia; its fragrant white blooms are a seasonal highlight. Beyond the arbor lies a woodland garden filled with Lenten roses, camellias, viburnum, astilbe, and hydrangeas, all framed by variegated liriope. Stone steps lead to the water’s edge, where lilies and irises float in a tranquil pond. Winding paths reveal secluded spots teeming with wildlife—deer, herons, foxes, turtles, and more. Over 24 years, the property has evolved into a peaceful sanctuary, lovingly shaped into a place of reflection and connection with nature.
Sisko Gardens and Sculpture Site, Mahwah, NJ. Over 37 years, this 3½-acre property has transformed from dense woodland into a vibrant sanctuary. Once a modest farmhouse, the home now opens to sunset views, terraced gardens, and a serene fishpond and pool framed by repurposed farm stones. Perennials and annuals bloom across the upper gardens, while a raised vegetable plot with a ten-zone irrigation system adds function to beauty. More than 1,000 feet of deer fencing and electric gates protect the grounds, where contemporary metal sculptures—crafted by the owner—punctuate the landscape. Winding paths lead through color, texture, and quiet, inviting visitors to explore art and nature in harmony. The Sisko Gardens and Sculpture Site is a living gallery—designed, built, and maintained by hand—a rare blend of creativity, craftsmanship, and cultivated peace.
The gardens will be open from 10 a.m. to 4 p.m. for registered guests. The Mountsier Garden will host visits in three sessions: 10 a.m.-Noon; Noon-2 p.m., and 2 p.m. to 4 p.m. Tickets for garden visits are $10 per person, or $5 for members of the Garden Conservancy. Children 12 and under are admitted for free when accompanied by a parent or guardian. All registrations must be processed online through the Garden Conservancy's website.
