May 16, 2025 Blooming in the lowlands now. Elderberry (Sambucus canadensis), a large shrub reaching 5 to 12 feet tall, leafing out early in the spring. Large, flat-topped clusters or cymes, of five-pointed, white, 1/4 inch wide, mildly scented flowers are emerging now and soon will be in full bloom up here in the mountains.…