From High School Side Hustle to Two Crews: Diamond Lawn Care’s Fast Track Growth

In this episode of The Lawn Care Grow Show, host Mark Lamberth talks with Aiden Sullivan of Diamond Lawn Care in Wentzville, Missouri about how he turned mowing his parents’ yard in high school into a fast‑growing maintenance and landscaping company serving St. Charles County and beyond. Starting in 2022 with a handful of neighborhood lawns, Aiden now runs two trucks, multiple trailers, a full‑time crew of three plus part‑time help, and maintains 90–100 lawns a week alongside two to three landscape jobs per day. He shares how he’s expanding from core services like mowing, fertilization, mulch, trimming, and spring cleanups into drainage work, French drains, and small retaining walls, while learning to step out of the field and run two crews from the driver’s seat of the business instead of the mower. Aiden opens up about the real challenges of scaling at his age—documenting jobs clearly so crews know exactly what to do and what tools to bring, pricing projects after a few painful underbids, and finding dependable help in a competitive suburban St. Louis market—plus how strong communication and five‑star service have kept customers coming back for every new project they dream up. What you’ll learn on this episode: How Aiden grew from mowing his parents’ yard in high school to managing ~100 weekly lawns and multiple crewsThe services Diamond Lawn Care offers today, from mowing and fertilizer to drainage solutions and small retaining wallsWhat changes when the owner stops riding on a crew and starts managing two trucks and teams from the officeHow he’s learning to estimate landscape projects (materials, man‑hours, overhead) after underquoting some early jobsWhy clear job notes, checklists, and tool lists are critical so crews don’t waste time running back for forgotten equipmentThe hiring reality in his area and why he’s considering seasonal guest‑worker programs to solve labor shortagesHow tight routing in St. Charles County and careful service‑area limits keep his mowing operation efficientThe role of reviews, relationships, and “do‑it‑right” quality in turning first‑time mowing clients into long‑term full‑service customers