I don't want to pick on you, just want to make a point.
And I repeat, my point is: before asking any questions, make the effort to do A LITTLE BIT of research first. If you had googled and had found nothing relevant, then coming to this forum and posting a message is the reasonable, like what I did with my lawn problem.
You said that you have used "ottawa lawn care" when you searched in google, I used the exact same string and the 3rd result actually shows EVERYTHING I need to know in maintaining a healthy lawn in Ottawa, including a
Monthly Lawn Maintenance Schedule. In fact I'm trying to teach you the way to find solutions rather than just the solutions, it's easy to just tell you the solutions, but that's not really helping you. If you can't appreciate that, that's fine by me, you are entitled to your opinion, everyone does.
Finally, if you have a problem with me writing in English, I hate to be the one to tell you the unfortunate news: you've immigrated to the wrong country.