We live in Toronto just west of Yonge Street, South of St. Clair. Last year we planted several spiral boxwood plants down our driveway. Can you please recumbent someone who specializes in topiary pruning, as I understand that to create healthy topiary, pruning has to begin while the plants are young?
Thank you for contacting the Toronto Master Gardeners.
It is important to maintain topiary boxwood so as not to let them grow to much so they loose their form.
Unfortunately the Toronto Master Gardeners do not recommend specific companies , however in the link that follows, you can access the Landscape Ontario webpage where you can select from a number of companies to speak to and choose from. It is probably a good idea to ask them if they have other clients and experience in topiary maintenance.