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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Liatris (punctata)

Tara Luna
USDI NPS - Glacier National Park
West Glacier, Montana 59936
(406) 888-7835
http://plant-materials.nrcs.usda.gov/azpmc

Family Scientific Name: Asteraceae
Family Common Name: Sunflower family
Scientific Name: Liatris punctata Hook.
Common Name: Dotted gayfeather
Species Code: LIAPUN
Ecotype: East Glaicer, MT
General Distribution: Dotted gayfeather is a perennial species that ranges from southern Alberta, Manitoba, and Saskatchewan, south to Texas, New Mexico and Arizona. It ranges east in the Midwestern states to Minnesota, Illinois and Iowa. It is drought resistant and well adapted to a variety of upland prairie sites. Dotted gayfeather is common on shallow soils or on heavier loam soils on the drier plains, hillsides and roadsides.
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Stock Type: 160 ml (7 cu in)
Time To Grow: 6 Months
Target Specifications: Firm root plug with multiple leaves.
Propagule Collection: Dotted gayfeather flowers in August and September and produces a dense spike of clustered flowers that are pink to reddish purple. The fruits are achenes that are dark grey at maturity with a white feathery pappus borne at the top of the achene. Achenes mature approximately in late September and October. Seeds are dispersed by wind.
Achenes ripen from first from the lower portion of inflorescence and progress upwards. Collect fully achenes just prior to dispersal by hand.
Propagule Processing: Large collections can be cleaned with a hammermill and air column separator. Small collections can be cleaned by rubbing the achenes over a screen to separate the pappus from the achenes.
There are approximately 305,800 seeds per kilogram (139,000 seeds per pound). Seeds exhibit physiological dormancy.
Pre-Planting Treatments: Seeds are cold, moist stratified for 60 days in a refrigerator at 1 to 3 C. Seeds are imbibed in water and rolled into moist paper towels inserted into an opened zip-lock bag.
Dry stored seeds may germinate without pretreatment,but stratification gives a more uniform germination.
Sowing method: Direct seeding.
Growing Area Preparation/
Annual Practices for Perennial Crops:
Seedlings are grown in a fully automated greenhouse. Seedlings are grown in a well aerated medium such as 2:1 (v:v) Sunshine mix #2 and perlite.
Establishment Phase: Seeds and seedlings need to be kept evenly moist during establishment. Once estblished, they must dry down between irrigations.
Length of Establishment Phase: 1 month
Active Growth Phase: Seedlings need to dry down between irrigations. They can be fertlized with a low dose complete fertilizer once per week.
Length of Active Growth Phase: 3 months
Hardening Phase: During mid to late summer, seedlings should be moved to the outdoor nursery to undergo hardening until late fall.
Length of Hardening Phase: 3 months
Harvesting, Storage and Shipping: Seedlings can be planted in the fall or overwintered in the nursery using Microfoam sheets and planted the following spring. Special precautions should be taken for over-wintering this species in containers so that seedlings do not receive excessive moisture during storage.
Length of Storage: 5 months
Other Comments: This species produces a fleshy branched taproot. Other container types may be more suitable.

Citation:

Luna, Tara. 2008. Propagation protocol for production of Container (plug) Liatris punctata Hook. plants 160 ml (7 cu in); USDI NPS - Glacier National Park West Glacier, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/02). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.