code: 996
This superb plant is native to Idaho and Mexico
Family: Scrophulariaceae
Common name: Whipple’s Penstemon
Plant Classification: Hardy perennial
Minimum Height: 30 cm
Maximum Height: 38 cm
Standing out from its other Penstemon relatives, this plant has lovely, pure white flowers, the corolla’s lower lip pouting out beyond the upper, with the flowers coming in intriguingly tiered groups up the slender stem. This superb plant is native to Idaho and Mexico.
Sowing advice:
For best results, sow seeds immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. However, we sow most seeds in an unheated greenhouse and wait for natural germination as many seeds have built-in dormancy mechanisms, and often wait for spring before emerging regardless of when they are sown. But spring sowing will obviously give them a full season of growth if successful germination occurs.
Noteworthy Characteristics
Native from Idaho to Mexico. Use in a rock garden or woodland garden. Tolerates moist and acidic soils slightly more than other penstemons.
Care
Provide full sun to part shade, well-drained soil, and average moisture.
Propagation
Take softwood cuttings in early summer or semi-ripe cuttings in midsummer. Divide in spring.
Problems
Powdery mildew, rust, leaf spots, and Southern blight. Slugs and snails may damage young plants.
- Genus:Penstemon
- Plant Height:1 to 3 feet
- Zones:3, 4, 5, 6, 7, 8
- Plant Width:6 to 12 inches
- Plant Seasonal Interest:Fall Interest
- Light:Full Sun to Partial Shade
- Moisture:Medium Moisture
- Plant Type:Perennials
- Flower Color:Red
- Bloom Time:Summer
