Just get a real job. Being a lawnboy isn't as glamorous as it looks. It is seasonal and you need money all year. Equiptment prices are high and gas is expected to go up again. Prices for jobs are at an all time low. Get your degree and then hire one of us sorry SOBs to mow your lawn while you sip a cool brew and watch us sweat!
I am as poor as a church mouse and have done this for 17 years. Look for a part-time job in the field which you are going graduate. It will be good experience for you.