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Penstemon serrulatus

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Names

Common Names
Cascade Penstemon

Growth

Height
19.5-27.5 inches
Spread
12-24 inches
Growth Rate
Medium growth rate

Appearance

Bloom Color
Purple and blue
Foliage Color
Green, Soft green
Fall Foliage Color
Purple to deep purple-blue

Environment

Hardiness Zones
Zones 6a-9b
Sunlight Requirements
Ideally full Sun. Tolerates Partial Shade and Full Shade.
Soil Type
Moist, well-drained soil.
Soil Drainage
Well-drained but evenly moist soil
Soil pH
No soil pH data provided in sources.

Lifecycle

Lifecycle
Perennial
Leaf Lifecycle
Deciduous
Seasons of Interest
Spring and Summer
Bloom Time
Summer (June–August)

Reproduction

Propagation Methods
Seeds and Cuttings

Wildlife

Attracts Wildlife
Bees, other insect pollinators, butterflies, and hummingbirds are attracted.

References

Taxonomy

Taxonomic Rank
Species
Author
Menzies ex Sm.
Publication
Cycl. 26: n.° 5 (1814)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Lamiales
Family
Plantaginaceae
Genus
Penstemon

Synonyms

Penstemon argutus Penstemon diffusus Penstemon themisteri Penstemon diffusus f. albiflorus

References

Taxonomic data from World Flora Online, accessed June 20, 2024

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