Your first time can be nerve-racking, rife with anxious buildup. You want it to be fun, safe, productive and long-lasting. You worry you’ll be judged. You’re keen to get it right. Fret not, turf-care rookie. Ryan Bourne has you covered. He’s the former superintendent at Terradyne Country Club, in Andover, Kan, and a longtime member of the Golf Course Superintendents Association of America who now works in the chemical fertilizer business. We asked him to identify the most common mistakes novices commit when they try to grow in a lawn. Here are 9 you should avoid.