London doesn't call itself the Forest City for nothing, its streets are lined with mature maples, oaks and ash, the last of which have been hit hard by the emerald ash borer. That mix of beloved old trees and ongoing pest pressure keeps skilled arborists in demand. Of the 13 tree-care companies listed in London on treelist.ca, these three stand out, from a certified full-service firm to specialists in hedges and stumps.
ConservaTree is a certified-arborist company that has served London and a wide surrounding area, St. Marys, Grand Bend, Strathroy, St. Thomas, Woodstock and more, for around 15 years, and has been BBB accredited since 2012. Beyond pruning, trimming and removals, they produce formal arborist reports and tree assessments, the documentation homeowners often need before removing a significant tree.
That consulting capability sets them apart from crews that only cut.
Big Don's Garden brings real depth on the hedge side of the trade, which is where it stands apart. Alongside tree and broken-limb removal and storm-damage cleanup, the team handles classical topiary, hedge reductions, pruning, trimming and shaping for both residential and commercial clients. They're fully licensed and insured, and BBB accredited as of 2025.
If your property has formal hedging or topiary that needs an expert hand, this is a natural first call.
London Stump Services is a specialist run by Frank Cupello, who brings 15 years of stump-grinding experience to London and the surrounding area. The service is thorough: after grinding out the stump and root system, the crew backfills the hole, with optional grading, soil fill and seeding to blend the spot back into your existing lawn.
They're fully insured and offer free estimates for both residential and commercial jobs.
Final Thoughts
For full-service, certified care, including the arborist reports you may need for a removal, ConservaTree is the standout in London. Big Don's is the specialist for formal hedges and topiary, while London Stump Services is the one to call when a tree is already down and only the stump remains. With any of them, confirm licensing and insurance, and ask about London's tree-protection rules before removing a mature tree.