LoneStar Ag
LoneStar Ag is a comprehensive agricultural solutions provider that caters to the needs of ranchers and farmers in Kaufman, Ellis, Van Zandt, and Henderson counties in Texas.
Our expertise lies in applying pesticides and fertilizers to optimize crop yields and maintain soil health.
LoneStar Ag sprays over 25,000 acres of pasture and range land each year. New for 2026, we are offering aeration and dry fertilizer spreading.
Our signature product, RootAMax, is a custom-blended fertilizer that has gained immense popularity among farmers.
Committed to sustainable agriculture practices, LoneStar Ag is dedicated to helping its clients achieve agricultural success.
Aeration
Aeration Timing:
- July Through December
- Works Best on Dry Pasture
Counties Served:
- Kaufman, Ellis, Van Zandt & Henderson
Aeration Benefits:
- Breaks through compacted soil
- Improves forage production
- Enhances soil health
- Reduces rain run-off
Spreading
Utilizing custom-blends of pelletized fertilizer - with your unique needs in mind - we cover pasture and rangeland in Kaufman, Ellis, Van Zandt and Henderson counties. We offer RootAMax impregnated fertilizer to increase soil health.
Family First
We are proud to be a family owned and family operated business. Curtis has high hopes for Grant to take over LoneStar Ag one day!
About Our Founder
Growing up on a 1,000 acre farm near the Finger Lakes in Upstate New York, our Founder, Curtis Witmer has been one with the land; since he was 9 years old, he has been preparing fields, harvesting crops, operating equipment, and handling livestock.
By the age of 15, Curtis was applying fertilizer on a John Deere 4038R with 120 foot booms.
As his experience grew, so did his enthusiasm for crops.
“What can we do to make our crops better?”
He was met with the typical farmer opposition “you can’t control the weather” and “we’ve always done it this way.”
Fueled by his competitive nature, Curtis attended expos, seminars, and tested every product he could get his hands on. Although the information he learned and the products he tested did technically increase the yields — it wasn’t consistent. It increased the yields… but not if it was too hot or there wasn’t enough rain or if there was a wind storm.
One day he came to the realization: Better Roots = Better Plants.
His theory was if the roots were strong, the plant could absorb more nutrients to increase the yield PLUS stand firmer in the ground to withstand extended periods of strong winds, and most importantly hold water for longer periods of drought.
Curtis tested his instincts over a ten year period where he mixed different amounts of micronutrients and plant growth hormones until he found a stress-proof formula… which he called “RootAMax”.
So yes, Better Roots = Better Plants
Curtis introduced his product RootAMax (trademark pending) to Texas in 2022 by partnering with a friend who owns a local custom fertilizer spraying business. After two years in Texas, Curtis bought out his friends custom spraying business and named it LoneStar Ag. Curtis sprays 20,000+ acres in Henderson, Kaufman, Van Zandt, and Ellis County each year; typical crops include wheat, corn, soybeans, Coastal Bermuda and Sorghum Sudan grasses.
Curtis currently lives in Mabank, Texas where he enjoys buying and selling cattle, creating and applying custom-blend fertilizers, reading business and industry specific books, as well as spending time with his wife Mariah and his son Grant.