Best Landscaping Companies in St. Thomas, ON
15 contractors listed · 7 in St. Thomas · 3 open 24/7 · 13 open weekends · 14 rated 4.5+
Data verified October 21, 2026
Kettle Creek Landscaping
Harbour Ridge Design and Build
Cardinal Landscaping & Lawn Care
Keat's Lawn Care
Beamish Landscape Services Inc.
Listed for homeowners in and around St. Thomas, ON, these 15 contractors work on yards and gardens. Services, seasonal hours and any free estimate are taken from each company's own website; the star ratings and quoted lines come from public reviews.

Area overview: St. Thomas, ON
Of the 15 contractors we list here, 7 are in St. Thomas itself and 8 come from London (7, 24 km) and Central Elgin (1, 3 km). The contractors on this page are rated from 3.8 to 5.0 across 1,173 reviews; 5 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (100%), quality (97%) and responsiveness (91%). The topics that come up most in reviews of the contractors on this page are "price" and "estimates". 3 are open around the clock; 13 are open on Saturdays and 9 on Sundays. The services the contractors on this page list most often on their websites are concrete (2), hardscaping (2) and landscape design (2). 6 have ten or more years of experience, the longest 30 years. 3 offer emergency call-outs; 1 offers financing or payment plans; 4 give free estimates and 3 are family- or locally-owned. We have a website on file for 14 of the contractors on this page; 13 publish a contact page and 14 list a public email. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Do any of these landscapers quote for free?
Free estimates are advertised by 4 of the 15 contractors listed here. On a mulch top-up or a small planting job that is a short visit and a number. On a build with grading and plant selection, expect the no-charge part to end at the walk-through, and book early, because the quoting season is short.