New 2017 United States Record grown with Root Keeper
2nd place Iwan Horde 18 feet 9 inches
3rd Johnston/Butler 18 feet 2 inches
4th Scott st Laurent 17 feet 3 inches
Here is a picture of my tall sunflower and a little story of what I used to help get it to 24'9" tall.
In 2016 Steven DeRycke from New York and I from Fenton, Michigan each grew a new US record tall sunflower at 23'1" tall. We each went to Port Elgin Canada to have them certified and with two of them in the same place that was a site to see.
I new starting the 2017 growing year that I was going to have do something big time to beat the 23' 1" from 2016. So as in all plants it all starts at the roots and in tall sunflowers the tap root counts in the height. Using Marks Root Keeper was the only thing I did different from 2016 and it helped me grow a new US Record at 24' 9" tall, beating the 2016 record by 20". Will I be using it again in 2018 ? You bet I will !