Poaceae (Aristida)

Protocol Information for:

Label_title:
Aristida (purpurea)

Family Names:

Family Scientific Name:
Poaceae

Family Common Name:
Grass Family

Scientific Names:

Genus:
Aristida

Species:
purpurea

Scientific Classification:

Scientific SubSpecies:

Species Authority:
Nutt.

Scientific SubAuthority:

Authors:

Cheryl Decker

Common Synonym:

Genus:

Species:

Synonym Classification:

Synonym SubSpecies:

Species Authority:

Synonym SubAuthority:

Other Information:

Common Name:
Purple three-awn

Species Code:
ARIPUR

Ecotype:
Zion National Park, Utah

General Distribution:
Aristida purpureais found throughout the western United States and east to Minnesota and south to Louisiana. It is also found in Virginia and West Virginia.

Known Invasiveness:

Propagation Goal:
plants

Propagation Method:
seed

Product Type:
Container (plug)

Stock Type:
SC-10 Super Cells

Grow Time:
4 Months

Target Specifications:
Height: N/A
Caliper: N/A
Root System: Firm root plug in container.

Propagation Collection:
Seeds are hand collected from sites within the Park when fruits have fully matured.

Propagation Processing/Propagule Characteristics:
Seeds are stored in sealed containers under refrigeration between 40 and 60 F.

Pre-Planting Propagule Treatments:
Seeds are directly sown into SC-10 Super Cells (3 per cell) in July containing a medium of 1.5 parts vermiculite, 1 part sterile sand, 1 part coarse turface, and 2 parts peat moss (v:v:v:v). Cells are watered thoroughly after sowing and are not allowed to dry out completely during during germination.

Growing Area Preparation / Annual Practices for Perennial Crops:
Seedlings are grown in a shadehouse from July through October.

Establishment Phase:
We sometimes incorporate 13:13:13 NPK Osmocote time release fertilizer into media.

Length of Establishment Phase:

Active Growth Phase:
Seedlings are hand watered throughout the growing season after they are well established. Throughout the active growth phase, we irrigate when containers are nearly dry as a method of hardening the plants while they are being grown.

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:
Decker, Cheryl. 2003. Propagation protocol for production of Container (plug) Aristida purpurea Nutt. plants SC-10 Super Cells; USDI NPS - Zion National Park Springdale, Utah. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/06/02). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

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