If you garden at high altitude it helps to pick plants known for cold-hardiness, drought tolerance, and the ability to handle intense sun and shorter growing seasons. Here are good freeze-resistant, high-altitude plant recommendations that do well in gardens and landscapes like ours. Penstemon (Beardtongue) Many penstemon species are native to mountainous areas, tolerate poor, rocky soil, and thrive in full sun with well-drained conditions — ideal for high-altitude gardens. Colorado Columbine This wildflower is native to the Rockies, tolerates cold and…








