The Harvey Butler Memorial Rhododendron Sanctuary 30 acres (121,000 m²) is a nature reserve located on Route 11A, Springvale, Maine. The sanctuary is open to the public, and is owned by the New England Wild Flower Society, which also maintains the Garden in the Woods.
The sanctuary contains a 5.3 acre (21,000 m²) stand of Great Laurel (Rhododendron maximum), Spice Bush, Clintonia, Painted trillium, and at least 39 species of wildflowers.
References
Harvey Butler Memorial Rhododendron Sanctuary Wikipedia(Text) CC BY-SA