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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

Lupinus (microcarpus)

Lee Riley
Horticulturist
USDA FS - Dorena Genetic Resource Center
34963 Shoreview Road
Cottage Grove, Oregon 97424
541-915-7324
541-767-5709 (fax)
leriley@fs.fed.us
Family Scientific Name: Fabaceae
Family Common Name: Pea
Scientific Name: Lupinus microcarpus
Common Name: Valley lupine
Species Code: LUMI9
Ecotype: Rogue River-Siskiyou National Forest, Oregon
General Distribution: Western North America from southwestern British Columbia south through Oregon and California, including the Mojave Desert, and into Baja California
Propagation Goal: Plants
Propagation Method: Seed
ProductType: Container (plug)
Stock Type: 262 ml (16 in3) container
Time To Grow: 16 weeks
Target Specifications: Stock Type: Container seedling Root System: Firm plug in container.
Pre-Planting Treatments: Seeds are placed in a rotating drum lined with sandpaper (Missoula Technology Development Center) for approximately 3 hours to scarify the seed coat. Seeds are then placed in fine mesh bags into a 1% hydrogen peroxide (3:1 water/3% hydrogen peroxide) soak for 24 hours, rinsed, and placed in water for an additional 2 hours. The bags are placed in sealed containers in refrigeration at 1 to 3 °C for 7 days.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Seeds are directly sown into containers. Seeds are lightly covered with nursery grit.
Growing medium used is 40:20:20:20 peat:composted fir bark:perlite:pumice with Nutricote controlled release fertilizer (18N:6P2O5:8K2O with minors; 180-d release rate at 21C) at the rate of 1.5 gram Nutricote per 262 ml container.
Establishment Phase: If scarification is effective, germination is uniform and quite rapid. It is usually complete in 10 to 14 days. Following germination, plants are fertilized with soluble 12-2-14-6Ca-3Mg at 75 ppm for 1 to 2 weeks.
Length of Establishment Phase: 2 weeks
Active Growth Phase: Plants grow rapidly following establishment, and may need to be top-pruned approximately 3 months following establishment. Soluble fertilizer (20-9-20 NPK, 20-18-18 NPK, or 17-5-24 NPK) at 100 to 150 ppm is applied weekly throughout the growing season.
Length of Active Growth Phase: 14 weeks
Hardening Phase: No dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in late September.
Length of Hardening Phase: 2 to 3 weeks
Harvesting, Storage and Shipping: Harvest Date: Mid to late October
Storage Conditions: Seedlings are usually outplanted in fall to mid-winter. No storage except in outdoor growing area. Plants are well irrigated prior to shipping and shipped in containers.
References: Dorena Genetic Resource Center Propagation Records, unpublished.

USDA Natural Resources Conservation Service. Lupinus subvexus C.P. Sm. var. subvexus valley lupine. URL: https://plants.usda.gov/core/profile?symbol=LUSUS (accessed 20 Feb 2020).

Wikipedia. Lupinus microcarpus. URL: https://en.wikipedia.org/wiki/Lupinus_microcarpus (accessed 20 Feb 2020).

Citation:

Riley, Lee E.; Klocke, Allison. 2020. Propagation protocol for production of Container (plug) Lupinus microcarpus Plants 262 ml (16 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. 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.