Lupinus (arboreus)
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Courtney Johnson Building 201, Fort Mason San Francisco, California 94123 415-332-5193 cjohnson@parksconservancy.org |
| Family Scientific Name: | Fabaceae | ||
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| Family Common Name: | Pea | ||
| Scientific Name: | Lupinus arboreus Sims | ||
| Common Name: | Yellow Bush Lupine | ||
| Species Code: | LUPARB | ||
| Ecotype: | California coastal bluffs, dunes, and inland areas | ||
| General Distribution: | Probably native from Sonoma to Ventura counties; naturalized as far north as British Columbia; found below 100m | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | Deepot 40 | ||
| Time To Grow: | 4 Months | ||
| Propagule Collection: |
Collection Period: June-September. Seed characteristics: Seeds in black-brown hairy pods, 8-12 seeds/pod. Ripe seeds are 4-5mm in diameter, black-tan, often striped lighter. Seeds ripe when both pod and seeds are dark black-brown and rigid. Collection Procedures: Pods are manually collected; they are easily split by hand to release seeds and checked for insect predation. |
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| Propagule Processing: |
Cleaning: Seeds are removed from pod, PRIOR to storage to limit insect predation. Storage: Seeds are kept dry in paper bags and stored in a refrigerator. Seeds per gram:~15 |
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| Pre-Planting Treatments: | Using 320 grit (fine) sand paper, seeds are gently rubbed along sand paper until seed coat is visibly eroded(i.e. until black-tan seed coat yields to white-grey interior). Be sure to rub seeds at their attachment point to the pod--a small divet on the shorter side of the seed. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Fully-controlled greenhouse. Sowing method: Direct sowing. 1 seed per container is sown in well-watered standard potting mix (peatmoss, fir bark, perlite, & sand). Seeds are covered with a thin layer of soil aproximately 2 times diameter of seed. Water/mist by hand. Seeds are sown August-September. Germination rate: 95% |
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| Establishment Phase: |
Freshly-sown seeds & new seedlings are grown in greenhouse with automatic mist (VPD 25-30). Seedlings are kept in wire-mesh cages to prevent predation by rodents. Seeds germinate within 2 weeks of sowing. Seedlings are moved to wire-mesh cages in outdoor shadehouse immediately after plumules emerge. Maunal misting is continued until true leaves emerge. |
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| Length of Establishment Phase: | 3 weeks | ||
| Active Growth Phase: |
Plants are grown in outdoor shadehouse. Watering regime: Deep water when pots dry to bottom (approximately 40min/once a week). Plants are fertilized with NPK 13-13-13 at 3 months. Survival rate: 90% |
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| Length of Active Growth Phase: | 2-3 months | ||
| Other Comments: | LUPARB is very suseptible to root crown rot. Preventative measures that proved successful in the 2002 Marin Headlands Nursery experiements included low mist setting, early movement of seedlings to shadehouse, and deep infrequent watering. | ||
| References: | A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973. | ||
Citation:
Heimbinder, Erin; Johnson, Courtney Leilani. 2002. Propagation protocol for production of Container (plug) Lupinus arboreus Sims plants Deepot 40; San Francisco, California. 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.
