thanks for the answer!
no, i did nothing to breach the contract. in the lease, the owner agreed to care for the lawn and snow removal, he contacted me and told me that he was no longer willing to do it. I said the only way I would do it was if he would lower the rent, because I don't own a lawnmower or snowblower. He then said that he wanted to cancel the lease.. I was outraged!
The owner must really not know what he's doing because he missed out on a full month's rent, which would've easily covered any lawncare expenses for the year, by breaking our lease.