JT in Thornhill 10 reviews THORNHILL, ON Joined 2011/11/29 8/10 routine lawn care Lawn Maintenance review in Markham Over 6 years ago Jonathan is very reasonably priced and offers effective service. We shopped around for effective solutions to keep our lawn maintenance free. Grass Roots has been great. We have used them for the last 2 years. Job Price Was this review helpful?