2026 Availability- late May to June
Dusty Penstemon (Penstemon comarrhenus) is a lovely Penstemon option that brings subtle color to waterwise landscapes. Low mounds of pale gray, finely textured, "dusty" foliage create a luminous base that contrasts beautifully with surrounding greens, while late spring to early summer brings upright stems of tubular light blue to soft purple flowers. These nectar-rich blooms are a favorite of native bees and hummingbirds. Dusty Penstemon thrives in lean, well-drained soils and full sun. Since its stems can be tall and few in number, we recommend planting it in groups behind or among other dry perennials and grasses for a pop of vertical interest and soft color in dry garden beds and borders, rock gardens, Mediterranean style gardens, or naturalistic designs. Do not overwater or the tall stems can become brittle and prone to breakage.
Photo Credit: HQ
Dusty Penstemon
Irrigation Requirement: Very Low (Water to Establish)
Mature Size: 1 - 4' tall and 1 - 2' wide
Spacing: 18 - 24" apart
Bloom Colors: Blue/Purple
Bloom Season: May - June or July
Hardiness Zone: 5 - 8
Light Requirement: Full Sun
Deer Resistant: Yes
Salt Tolerant: No
Soils: Prefers well-draining sandy or loam soils, but can handle some clay if its well-drained. It will not handle waterlogged or heavy clay soils.
Plants in the Penstemon genus are host species to 19 known native pollinators in northern Utah. Penstemons are also an important nectar source for native pollinators.