Delphinium (decorum)
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Betty Young Nurseries Sr Manager Bldg 201, Fort Mason San Francisco, California 94123 415-331-6917 415-331-7521 (fax) byoung@ggnpa.org |
| Family Scientific Name: | Ranunculaceae | ||
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| Family Common Name: | Buttercup Family | ||
| Scientific Name: | Delphinium decorum Fisch. & C.A. Mey. | ||
| Common Name: | Coastal Larkspur | ||
| Species Code: | DELDEC | ||
| Ecotype: | Marin County, California | ||
| General Distribution: | D. decorum is found on open grassy slopes below 2000 feet elevationnear the coast, from Mendocino County to Santa Cruz County, California. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | Container Seedling | ||
| Time To Grow: | 0 | ||
| Target Specifications: | Height: N/A<br> Caliper: N/A<br> Root System: Firm plug in container. | ||
| Propagule Collection: |
Seeds are collected between April 1st and June 1st. Mature follicles are brown. Seed is black and 1 mm long at maturity. |
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| Propagule Processing: |
Seed Cleaning:Seeds are removed from follicles by hand. Storage Conditions: Seeds are kept dry and stored in a refrigerator. |
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| Pre-Planting Treatments: | Soak seeds overnight in fresh water. Moisten peat or perlite. Mix seeds with an equal amount of peat or perlite and place in new freezer bags. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Fully Controlled Greenhouse. Sowing Method: Transplanting Germinants. 4 grams of seeds are sown per flat containing Sunshine Mix #4 Aggregate Plus ( Peat moss, Perlite, Major and Minor nutrients, gypsum, and dolomitic lime). Seeds are mixed with media to sow and are covered. Flats are watered in with an automatic irrigation and mist system. Seeds are sown on June 1st. % Germination: 10% |
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| Establishment Phase: |
Seeds germinate 14 days after sowing. Seedlings are transplanted 14 days after germination to individual containers 2"x7" tubes (Deepot 16)containing standard potting mix of peat moss, fir bark, perlite, and sand. Transplant Survival averages 75%. |
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| Length of Establishment Phase: | 1 month | ||
| Active Growth Phase: |
Fertilize with Nutricote NPK (13-13-13) 2 months after transplanting or as needed. Approximately 10 grains of fertilizer are applied per container. Pruning: Maintain 1:1 shoot/root ratio and remove flowers. |
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| References: | A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973. | ||
Citation:
Young, Betty. 2001. Propagation protocol for production of Container (plug) Delphinium decorum Fisch. & C.A. Mey. plants Container Seedling; San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
