Asteraceae (Artemisia)

Protocol Information for:

Label_title:
Artemisia (pycnocephala)

Family Names:

Family Scientific Name:
Asteraceae

Family Common Name:
Sunflower Family

Scientific Names:

Genus:
Artemisia

Species:
pycnocephala

Scientific Classification:

Scientific SubSpecies:

Species Authority:
(Less.) DC.

Scientific SubAuthority:

Authors:

Betty Young

Common Synonym:

Genus:

Species:

Synonym Classification:

Synonym SubSpecies:

Species Authority:

Synonym SubAuthority:

Other Information:

Common Name:
Beach wormwood

Species Code:
ARTPYC

Ecotype:
Marin County, California

General Distribution:
A. pycnocephala is found in coastal strand communities from Monterey County to Humboldt County, California, also in southern coastal Oregon.

Known Invasiveness:

Propagation Goal:
plants

Propagation Method:
seed

Product Type:
Container (plug)

Stock Type:
Deepot 16

Grow Time:
0

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

Propagation Collection:
Seeds are collected between September 1st and November 1st. Mature inflorescences are light brown, completely dry and slender. Seed is sliver like; less than 1 mm long.

Propagation Processing/Propagule Characteristics:
Seed Cleaning: Rub seeds over sieve to remove chaff. No further cleaning needed.
Seed Storage: Seeds are kept dry and refrigerated.

Pre-Planting Propagule Treatments:
None required.

Growing Area Preparation / Annual Practices for Perennial Crops:
Fully Controlled Greenhouse.
Sowing Method: Transplanting Germinants.
4 grams of seeds are sown per flat containing Sunshine Mix #4 Aggregate Plus (peat moss, perlite, major and minor nutrients, gypsum, and dolomitic lime).
Seeds are mixed with media to sow and are surface sown.
Flats are watered in with an automatic irrigation system.Flats are misted until seedlings germinate.
Seeds are sown on September 1st.
% Germination: 75%

Establishment Phase:
Seeds germinate 14 days after sowing.
Seedlings are transplanted 14 days after germination to individual containers 2"x7" tubes (Deepot 16) containing standard potting mix of peat moss, fir bark, perlite, and sand. Transplant Survival averages 95%.
Transplants are moved to the shadehouse for continued growth.

Length of Establishment Phase:
1 month

Active Growth Phase:
Species is easy to grow if seedlings are kept evenly moist and not allowed to dry out.

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:
A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973.

Citation:
Young, Betty. 2001. Propagation protocol for production of Container (plug) Artemisia pycnocephala (Less.) DC. plants Deepot 16; San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/01/22). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

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