The gardens were constructed at the site of an old rock quarry. Within the site there is very little soil, swampy areas along with higher elevated areas with large moss-covered boulders. Vegetation abounds throughout the park and includes evergreen and deciduous trees, many wild shrubs, and swamp plants. The trail is a gravel-covered nature trail through a very natural landscape with one entrance with a trail that leads back around to the entranceway.
Botanical Gardens: In St. Helens from US Hwy 30 near MP 29, turn NE onto Liberty Rd. Go 0.4 mi to junction with West St. then 0.1 mi further. Turn L (NW) on 6th St. for 0.6 mi, and park on R side of road by sign for Columbia Nature Trail.