<p>If you’re only decent in math, that will preclude many science and engineering fields. Almost all science and engineering fields will require math at least through calculus and possibly more. For some fields, you might need statistics, too. Required coursework in supporting sciences will require application of math, too.</p>
<p>Some fields you might consider that might not require as much math and also might have somewhat better employment prospects: food science, certain areas of geology, plant pathology, entomology. A geography major with a track in GIS might be a possibility, though some programs might require more math and computer science than you want to undertake.</p>