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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 2024/07/23). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.