Herman asked: Is it legal for homeowners/tenants to place their garbage cans in the bike lane for pickup? Also what duty do homeowners/tenants have in regards to keeping plant matter and other debris out of the bike lane in front of their homes?
It is unlawful to obstruct a bike lane. Please see the posts at this link.
The growth and removal of grass and other plant material in the right of way and overgrowth into the bike lane are the responsibility of the government entity having jurisdiction over that right of way, either municipality, county or state. You should contact the appropriate authority, preferably through an organized bicycle group or club. Most counties have Bicycle Pedestrian Advisory Committees that represent many government departments and can help in devising a coordinated maintenance program to prevent overgrowth.