Heterotheca (sessiliflora)
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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: | Asteraceae | ||
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| Family Common Name: | Sunflower Family | ||
| Scientific Name: | Heterotheca sessiliflora (Gray) Semple bolanderi (Gray) Semple | ||
| Common Synonym: | Chrysopsis villosa (Gray) Gray ex Jepson bolanderi | ||
| Common Name: | Sessileflower False Goldenaster | ||
| Species Code: | HETSESS | ||
| Ecotype: | Tennessee Valley, California | ||
| General Distribution: | H. sessiliflora ssp. bolanderi is found on grassy slopes near the coast, below 1500 feet elevation; from Mendincino County to San Francisco Bay, California. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| 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 September 1st and November 15th. Mature inflorescences are brown. |
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| Propagule Processing: |
Seed Cleaning:None required. Storage Conditions: Seeds are kept dry and stored in a refrigerator. |
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| Pre-Planting Treatments: | None required. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Fully Controlled Greenhouse. Sowing Method: Transplanting Germinants. Seeds are sown in flats containing Sunshine Mix #4 Aggregate Plus (peat moss, perlite, major and minor nutrients, gypsum, and dolomitic lime). Seeds covered with media. Flats are watered in with an automatic mist and irrigation system. Seeds are sown on May 1st. % Germination:50% |
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| Establishment Phase: |
Seeds germinate 21 days after sowing. Seedlings are transplanted 21 days after germination to individual containers containing standard potting mix of peat moss, fir bark, perlite, and sand. Transplant Survival averages 60%. |
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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) Heterotheca sessiliflora (Gray) Semple plants San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/21). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
