Machaeranthera (canescens)
|
Ann DeBolt Botanist Idaho Botanical Garden 2355 Old Penitentiary Road Boise, Idaho 83712 2085778137 ann@idahobotanicalgarden.org www.idahobotanicalgarden.org |
|
| Family Scientific Name: | Asteraceae | ||
|---|---|---|---|
| Family Common Name: | Sunflower Family | ||
| Scientific Name: | Machaeranthera canescens (Pursh) A. Gray | ||
| Common Name: | Hoary tansyaster | ||
| Species Code: | MACA2 | ||
| Ecotype: | Along Simco Road in Elmore County, southeast of Boise, Idaho. 3,150 feet/960 m elevation. | ||
| General Distribution: | In various habitats throughout western and central North America. | ||
| Propagation Goal: | Plants | ||
| Propagation Method: | Seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | 2.875 inch x 5.5 inch plant band (container) | ||
| Time To Grow: | 6 Months | ||
| Target Specifications: | Healthy root development filling container | ||
| Propagule Collection: | Seed was hand collected on October 19, 2011. Mature seed (white to tan achene) was removed from seed heads and placed directly into large paper bags, taking care to minimize dispersal into the wind. | ||
| Propagule Processing: | Seed was air dried in paper bags at room temperature. | ||
| Pre-Planting Treatments: | Seed was stored at room temperature in a dark location prior to sowing. No treatment was applied. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Sowing Method: Seed (with pappus retained) was sown directly into 550 containers (3-5 seeds/container) on February 27. Soil was a 2:1:5 mix of lava fines, perlite, and Sunshine Mix #4. Seed was sown ¬ inch deep and covered with 1/8 inch layer of chicken grit. Containers were hand watered and placed outside. No fertilizer was added to soil mix. | ||
| Establishment Phase: | By March 16 (18 days later), the first germinants were observed. By April 3, (5 weeks later), approximately 80% of the containers had at least one seedling. On May 3, 118 containers were reseeded with 2-3 seeds each. Some losses were observed but additional plants germinated later in the growing season. In the end, 80% of planted containers had established seedlings. | ||
| Length of Establishment Phase: | About 2 months | ||
| Active Growth Phase: | Containers were allowed to dry slightly between hand waterings. A weak fish emulsion fertilizer was applied twice a month from April through June. Plants were grown outside in full sun until outplanting in early October. 544 containers were outplanted, a small subset of which had multiple individuals. | ||
| Other Comments: | Plants were not permitted to flower while in the nursery. Flower stalks were removed as soon as they were observed. | ||
| References: | Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A., Vol. 5, Asterales. Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, P.K. Holmgren. The New York Botanical Garden, Bronx, NY. 1994. | ||
Citation:
DeBolt, Ann M.; Barrash, Kris. 2013. Propagation protocol for production of Container (plug) Machaeranthera canescens (Pursh) A. Gray Plants 2.875 inch x 5.5 inch plant band (container); Idaho Botanical Garden Boise, Idaho. 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.
