Epilobium canum 'Calistoga' is a vibrant California native perennial known for its bright orange-red, trumpet-shaped flowers and long summer-to-fall bloom season. Growing about 1–2 feet tall and 2–3 feet wide, it forms a spreading, low-growing mound of gray-green foliage that adds color and texture to the landscape. Its abundant blooms provide an important nectar source for hummingbirds and other pollinators when many other plants have finished flowering. Drought-tolerant and easy to grow, ‘Calistoga’ thrives in sunny, dry conditions and is an excellent choice for borders, slopes, habitat gardens, and water-wise landscapes.