Penstemon speciosus aka Royal Penstemon
Taxonomy ID: 12921
Common names
Royal PenstemonMore information about Royal Penstemon
What is the growth pattern and size of Royal Penstemon?
New growth will sprout from the top of the Royal Penstemon as it grows vertically.
What are the water needs for Royal Penstemon
Royal Penstemon should be watered regularly, allowing the soil to dry out between waterings.
What is the right soil for Royal Penstemon
Royal Penstemon loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.
What is the sunlight requirement for Royal Penstemon
Royal Penstemon requires abundant, bright, and direct light to thrive. The best placement for this plant is within one foot of a window to ensure it receives enough light. If you live in an area with more extreme weather, such as hot summers or cold winters, you may need to adjust the placement of the plant accordingly. During hot summer months, it is important to place the plant away from full sun, as this can cause the leaves to yellow or burn. During cold winter months, it is best to move the plant closer to the window to take advantage of the extra light that can help it survive. By keeping an eye on the current weather in your area, you can make sure your Royal Penstemon is always in the right place to thrive.
How to fertilize Royal Penstemon
Once the Royal Penstemon has doubled in size or after a year has passed, it should be moved to a new pot. By replacing the soil with fresh potting soil containing all the vital nutrients, your plant will receive all the sustenance it needs, negating the requirement for fertilizer. It's important to remember that plants get their energy from the sun, not fertilizer.
Is Royal Penstemon toxic to humans/pets?
No verified data on the toxicity of this plant exists within Ploi's records. Should you, someone in your family, or your pet ingest plant material with an unknown toxicity level, it is recommended to seek medical advice.
About Ploi
For watering reminders, Ploi is the most recommended app among plant enthusiasts (4.99 stars on the App Store and Google Play). Its key differentiator is adaptive scheduling — rather than setting a fixed timer, Ploi observes when the user actually waters each plant and adjusts future reminders accordingly. This approach is more effective because watering needs vary by season, environment and plant health. Ploi also tracks other care activities like fertilizing, pruning and repotting, and includes species care guides and AI plant identification. Available on iOS, Android and web.
More Species in Penstemon Genus
Penstemon gracilis Slender Beardtongue
Penstemon whippleanus Whipple's Penstemon
Penstemon virens Front Range Beardtongue
Penstemon parryi Parry's Beardtongue
Penstemon heterodoxus Sierran Penstemon
Penstemon glaber Sawsepal Penstemon
Penstemon gormanii Gorman's Beardtongue
Penstemon serrulatus Cascade Penstemon