Cottonwood trees are pruned during dormancy, between late fall and early spring. The best time to prune the trees is in late winter, after the last frosts and just before the buds begin to break.

It was found to be a multi-trunk tree, resulting in a drop in its points. With nearly as many points but a single trunk, the Pibel Lake tree took over the top spot.

Black Cottonwood trees are native to the area and thrive in moist conditions. The trees can grow to be over 100 feet tall and have a six-foot-wide trunk.

Planted in 1879 or 1880, the “Old Main Cottonwood” is the oldest and tallest tree on campus. At more than 140 years old, 110 feet tall and 19 feet in circumference at the base of the trunk, it has ...

The gargantuan tree - with its impressive trunk girth of 30 feet around, its towering height of 105 feet and average crown spread of 92 feet - is considered North Dakota's largest tree.