Penstemon Sour Grapes

The name Sour Grapes aptly describes the appearance of its unique flowers. Each bloom features tubular, bell-shaped blossoms with a striking coloration reminiscent of ripened grapes. The petals typically display shades of violet, purple, and blue, often with contrasting veins or speckles that add depth and interest to the overall appearance. This vibrant color palette ensures that Sour Grapes stands out in any garden setting, attracting pollinators like bees and hummingbirds with its nectar-rich flowers.

In terms of growth habit, Penstemon Sour Grapes typically forms clumps of upright stems that reach heights of around 2 to 3 feet (60 to 90 centimeters). These sturdy stems are adorned with lance-shaped leaves that provide a lush backdrop for the abundant floral display. When in bloom, the plant becomes a focal point in the garden, attracting attention with its profusion of colorful flowers that appear from late spring through early summer.

While Sour Grapes is relatively easy to grow, occasional maintenance tasks can help ensure its continued health and vigour. Deadheading spent flowers can prolong the blooming period and encourage additional flower production. Additionally, dividing crowded clumps every few years can help rejuvenate the plant and prevent overcrowding.