Scrophulariaceae (Penstemon)

Protocol Information for:

Label_title:
Penstemon (cardwellii)

Family Names:

Family Scientific Name:
Scrophulariaceae

Family Common Name:
figwort

Scientific Names:

Genus:
Penstemon

Species:
cardwellii

Scientific Classification:

Scientific SubSpecies:

Species Authority:

Scientific SubAuthority:

Authors:

Common Synonym:

Genus:

Species:

Synonym Classification:

Synonym SubSpecies:

Species Authority:

Synonym SubAuthority:

Other Information:

Common Name:
Cardwell's beardtongue

Species Code:
PECA16

Ecotype:

General Distribution:
This plant is found primarily in Oregon and Washington.

Known Invasiveness:

Propagation Goal:
plants

Propagation Method:
seed

Product Type:
Container (plug)

Stock Type:

Grow Time:
Weeks

Target Specifications:
Well-developed crowns, roots and rhizomes filling soil profile in container.

Propagation Collection:

Propagation Processing/Propagule Characteristics:

Pre-Planting Propagule Treatments:
We have found that we have the best germination for this plant after 90 days of cool(38F)/moist stratification prior to germination.

Growing Area Preparation / Annual Practices for Perennial Crops:

Establishment Phase:

Length of Establishment Phase:

Active Growth Phase:

Length of Active Growth Phase:

Hardening Phase:

Length of Hardening Phase:

Harvesting, Storage and Shipping:

Length of Storage:

Guidelines for Outplanting / Performance on Typical Sites:

Other Comments:

References:

Citation:
2015. Propagation protocol for production of Container (plug) Penstemon cardwellii plants USDA NRCS - Corvallis Plant Materials Center Corvallis, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/07/21). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

Personal tools