Location specific values:
Array
(
    [lat] => 39.646800
    [lng] => -104.994200
    [elevation] => 1628.4086
    [rainfall] => 433.0367
    [cold_temperature] => -8.5384
    [temperature] => 31.5733
    [user_eto] => 1422.75240386
)
Plant specific values:
Array
(
    [rain_min_irrigation] => 381
    [eto_corrected] => 1472
    [eto_adjusted_rain_min (rain_min_irrigation / eto_corrected)] => 0.25883152
)
James’ Beardtongue (Penstemon jamesii) | Easyscape Plant Profile

James’ Beardtongue

(Penstemon jamesii)

James’ Beardtongue (Penstemon jamesii)

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Estimated Native Range
Species Map Help

Climate Requirements for Englewood, Colorado

This Plant Your Site Plant Suitability for Your Location
Precipitation 10" - 27" 17" You should be able to grow this plant with no additional irrigation. Excellent
High Temp. 74°F - 100°F 89°F Your summer temperatures are normal for this plant. Excellent
Low Temp. 5°F - 44°F 17°F Your winter temperatures are normal for this plant Excellent
This plant should grow very well at your location without additional irrigation.

Summary

Penstemon jamesii, commonly known as James’ Beardtongue, is a perennial herb that is semi-evergreen to evergreen, depending on the climate. It is native to the open woodlands, grasslands, and rocky slopes in the central and southern United States, from Colorado to Kansas and extending south to northern Mexico. This plant typically grows to a height of 1-3 feet (0.3-0.9 meters) and a width of 0.5-1 feet (0.2-0.3 meters). James’ Beardtongue has a clumping form with erect stems and narrow, lance-shaped leaves. From late spring to early summer, it produces showy spikes of tubular flowers that are purple to pink, attracting pollinators such as bees and hummingbirds.

James’ Beardtongue is valued for its drought tolerance and its ability to thrive in challenging conditions, making it a suitable choice for xeriscaping and naturalistic plantings. It is often used in rock gardens, perennial borders, and as a ground cover in dry, sunny areas. The plant prefers well-drained soils, especially sandy or gravelly loams, and requires minimal water once established. While it thrives in full sun, it can tolerate light shade. There are no significant disease or pest problems associated with Penstemon jamesii, but it can be sensitive to root rot if overwatered or planted in poorly drained soils. It is not known to be invasive when grown outside its native range.CC BY-SA 4.0

Plant Description

  • Plant Type: Subshrub, Herb
  • Height: 1-3 feet
  • Width: 0.5-1 feet
  • Growth Rate: Moderate
  • Flower Color: Purple, Pink
  • Flowering Season: Summer
  • Leaf Retention: Semi-deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Low
  • Drainage: Fast

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Drought Tolerant, Groundcover, Hummingbird Garden, Low Maintenance, Rabbit Resistant, Showy Flowers

Natural Habitat

Native to open woodlands, grasslands, and rocky slopes

Other Names

Common Names: James’ Penstemon

Scientific Names: Penstemon jamesii, Penstemon similis, Penstemon jamesii var. jamesii, Penstemon brevibarbatus, Penstemon jamesii subsp. typicus

GBIF Accepted Name: Penstemon jamesii Benth.