He had a gig mowing lawns at 11. By 25, he had turned it into a multimillion-dollar landscaping business.

Some kids mow lawns for pocket money and move on. Cody Kuebler kept at it, turning the childhood gig into a multimillion-dollar business.

Now 25, Kuebler said he spent his summers growing up cutting his neighbors’ grass for around $25 a job, first with an aging push mower, and later with one his father gave him for his 11th birthday. The gift involved “a little bit of horse-trading,” he said: He’d have to cut his dad’s lawn.

Along the way, he hired friends so he could take on more customers and expand into snow removal during the winter months. Eventually, he earned enough to invest in riding lawn mowers with wagons attached.

“I got a little…