Any steps to prune birch trees for structure are best done when the tree is young. For example, if the tree has two dominant leaders, that can cause both to be weak and at risk of snapping in storms.

The birch borer is a small, bronze-colored beetle that attacks weakened or stressed birches from May to August. The insects are drawn to stressed trees by the release of a physiological signal.

However, they can tolerate drier soil as the tree matures and the roots become well-established. This makes mature river birch trees relatively drought-tolerant which is unique among birch varieties.

The park, which opened in 2012 as an ecological tourism site, has over 700,000 birch trees that were planted between 1989 and 1996 over its 10,000-square-kilometer territory.