Potentilla (glandulosa)

Mark E. Majerus USDA NRCS - Bridger Plant Materials Center 99 South River Road, Rte. 2, Box 1189 Bridger, Montana 59014-9718 (406) 662-3579 (406) 662-3428 (fax) mmajerus@mt.nrcs.usda.gov http://plant-materials.nrcs.usda.gov/mtpmc

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Family Scientific Name:	Rosaceae
Family Common Name:	Rose
Scientific Name:	Potentilla glandulosa
Common Name:	Sticky cinquefoil
Species Code:	POGL9
Ecotype:	See
General Distribution:	British Columbia to Baja California, east to Rocky Mountain States; rocky places in the mountains and prairies.
Propagation Goal:	seeds
Propagation Method:	seed
ProductType:	Propagules (seeds, cuttings, poles, etc.)
Time To Grow:	0
Target Specifications:	Harvest yields vary due to weather and age of stand. Average annual production is 49 kg/ha (44 lb/ac).
Propagule Collection:	Wildland collection occurred late August when the creamy white to yellow-colored flower had turned brown and the achene was reddish-brown and hard; easily hand-harvested. One collection hour/person will yield an average 40 grams (1.4 oz) clean seed and varies by year, stand density, and collector experience.
Propagule Processing:	Seed Processing: Seed is spread out on a tarp in a dry, sheltered environment and tuned daily for approximately 3-5 days, until no moisture or warmth is detected. Seed is threshed with a hammermill through a 4/64" round hole screen, air-screen processed on an Office Clipper over a 1-20" round hole screen with low wind. Due to tiny seed, absence of seed debris, and good seed flow, this species is moderately easy to clean. Larger seed lots are processed most efficiently with mechanized cleaning equipment and smaller seed lots usually require more hand labor. Seeds;Kg: 6,000,000. Purity: 100%.
Pre-Planting Treatments:	Seed Treatments: None required.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Propagation Environment: Seedbed is firm and free of weeds with good field moisture to 4" depth. Seed Propagation Method: Direct seeding.
Establishment Phase:	Sowing Date: Early spring. Sowing/Planting Technique: 25-30 pure live seed/ft (0.3 m) row, irrigated 91 cm (36 in) row spacing, seeded with 2-row double-disk planter with depth bands, optimum seeding depth 0.6 cm (0.25 in). Establishment Phase: Soil surface is kept moist throughout the 14 day germination and emergence period (also helps prevent soil crusting). Fertilizer application is not recommended the first year, as it generally stimulates weed growth and competition.
Length of Establishment Phase:	2 growing seasons.
Active Growth Phase:	Rapid Growth Phase: Spring to fall; soil moisture is critical during budding stage, after anthesis, and post harvest to pre-freezeup - no irrigation is applied during flowering (pollination); fertilizer is broadcast at 100 lbs actual N/40 lbs actural P/acre in mid-September.
Length of Active Growth Phase:	2 to 3 growing seasons.
Hardening Phase:	N/A.
Harvesting, Storage and Shipping:	Harvest Date: Cultivated harvest occurs late June to late July, with a mean harvest date of July 12 at the Bridger Plant Materials Center. Hand-harvesting is required because the seedheads are low to the ground. Seed Storage: Seed is placed in plastic ziplock bags (seed is so small it may sneak out of paper containers), repeatedly punctured to prevent moisture buildup, placed in cloth or plastic seed sacks, and stored in a cool, dry environment. Seed Dormancy: Classified as physiological dormancy.
Length of Storage:	<b>Storage Duration:</b> 5-7 years.
Other Comments:	Ecotype: 1 Yellowstone National Park accession periodically collected and produced from 1986 to 1990. Grassland ecological zone is big sagebrush/Idaho fescue haditat. Elevation is 2,286 m (7,500 ft).
References:	Flora of the Pacific Northwest, C.L. Hitchcock and A. Cronquist, University of Washington Press, 1973. Yellowstone Vegetation - Consequences of Environment and History in a Natural Setting, Don G. Despain, Roberts Rinehart Publishers, 1990. Seeds: Ecology, Biogeography, and Evolution of Dormancy and Germination, C.C. Baskin and J.M. Baskin, Academic Press, 2001.

Citation:

Winslow, Susan R.. 2002. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Potentilla glandulosa seeds USDA NRCS - Bridger Plant Materials Center Bridger, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/23). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.