Plant Encyclopedia
Everything about care, pruning, watering and winter hardiness of thousands of plants
Want to see this in your garden?
1 minute, no credit card
12 plants
Narrowleaf beardtongue: complete guide
Penstemon angustifolius
Narrowleaf beardtongue (Penstemon angustifolius) is a drought-tolerant perennial with pink-blue flowers, perfect for dry, sunny borders and prairie-style gardens.
Wasatch beardtongue: complete guide
Penstemon cyananthus
Wasatch beardtongue (Penstemon cyananthus) is a striking perennial with intensely blue flowers, native to the Wasatch Mountains of Utah and Wyoming.
Hotrock penstemon: complete guide
Penstemon deustus
Hotrock penstemon (Penstemon deustus) is a tough perennial with creamy-white flowers, native to dry rocky slopes of the western United States, perfect for xeric gardens.
Mountain blue penstemon: complete guide
Penstemon laetus
Full care guide for Penstemon laetus, the mountain blue penstemon from California and Oregon. Planting, watering, pruning and garden design tips.
Mountain pride penstemon: complete guide
Penstemon newberryi
Full guide to Penstemon newberryi, the mountain pride beardtongue. Rock garden care, planting, watering, pruning and companion plant ideas.
Palmer's penstemon: complete guide
Penstemon palmeri
Full guide to Penstemon palmeri, the fragrant tall beardtongue of the American Southwest. Planting, care, pruning and companion plant ideas.
Roezl's penstemon: complete guide
Penstemon roezlii
Roezl's penstemon is a compact perennial with striking tubular flowers in purple-blue. Native to Oregon, California and Nevada; ideal for dry, sunny gardens.
Rydberg's beardtongue: complete guide
Penstemon rydbergii
Rydberg's beardtongue is a robust perennial with rich purple tubular flowers, native to mountain meadows across the western United States. Hardy and wildlife-friendly.
Royal penstemon: complete guide
Penstemon speciosus
Royal penstemon is one of the most spectacular beardtongues, with large cobalt-blue tubular flowers. Native to the western US; thrives in dry, sunny gardens and borders.
Venus penstemon: complete guide
Penstemon venustus Douglas ex Lindl.
Venus penstemon (Penstemon venustus) is a shrubby perennial with stunning purple flowers, native to the Pacific Northwest. Learn how to grow this drought-tolerant beauty.
Whipple's penstemon: complete guide
Penstemon whippleanus A.Gray
Whipple's penstemon (Penstemon whippleanus) is a striking alpine perennial with dark purple flowers from the Rocky Mountains. Grow this tough mountain species.
Wilcox's penstemon: complete guide
Penstemon wilcoxii Rydb.
Wilcox's penstemon (Penstemon wilcoxii) is a robust Pacific Northwest native with lavender-blue flowers. Grow this adaptable and underrated beardtongue.