Odds of Hanging On
Those who can survive on low wages or the minimal income generated by their landscaping business should have no problem hanging on—but that's not as easy as it sounds. The pay can be really low for some, and a lack of benefits like healthcare is often an added problem.
If you really want to make a career out of this, you've got to climb the corporate ladder and become a supervisor, or open your own company and make a better living that way. Of course, if you're just in this for the basic landscaping, and can manage with the lower wages, you can do this job as long as your body allows.