You may not realized but trust me, you are paying for landscaping one way or another. A rent may be $1000 you do your own lawn, or $1100 a month with free landscaping.
Also, this is a contract between two individuals. It will be whatever the two individuals negotiate. If the contract says that you will get your car washed twice a month, then that's your right and the landlord's responsibility. If it says that you take care of the lawn, that's your responsibility and his right to expect. If you don't like the deal you are being offered, negotiate or decline.