Don't overlook the fact that mowing can be a marketing engine for a company that is not yet well established. It puts you in direct contact with potential install customers every week. It gives you many potential recomendations from them to people that they know. It gets you, your crews, and your trucks seen all over town all of the time.
Advertising for landscape construction without being established or any other recognition will not get you very far on a good day, and no where at all in this economy.