By Madelyn Miller :: Heritage Tree #260 Pseudotsuga menziesii – Douglas-fir Powell Butte Nature Park | Cedar Grove Trail Before being purchased by City of Portland in 1925, the primary users of what’s now Powell Butte Nature Park were a handful of wayward cows from the adjacent Meadowland Dairy and the occasional picnicking family.Continue Reading Heritage Tree #260 | Powell Butte’s Old Growth Douglas Fir