Phacelia (hastata)
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Ann DeBolt Botanist Idaho Botanical Garden 2355 Old Penitentiary Road Boise, Idaho 83712 2085778137 ann@idahobotanicalgarden.org www.idahobotanicalgarden.org |
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| Family Scientific Name: | Hydrophyllaceae | ||
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| Family Common Name: | Waterleaf Family | ||
| Scientific Name: | Phacelia hastata Douglas ex Lehm. | ||
| Common Name: | Silverleaf phacelia | ||
| Species Code: | PHHA | ||
| Ecotype: | Intermountain West. This collection was made 11 miles north of Boise in the upper Boise Front, Boise County, ID at an elevation of 5,444 feet (1,660 m). | ||
| General Distribution: | Well-drained, often sandy sites from low to higher elevations on both sides of the Cascade Mountains, from British Columbia to California, and east to the Dakotas and Nebraska. | ||
| Known Invasiveness: | None known. | ||
| Propagation Goal: | Plants | ||
| Propagation Method: | Seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | 2.8" x 5.5" plant band (container) | ||
| Time To Grow: | About 7 months | ||
| Target Specifications: | Healthy root development filling the container. | ||
| Propagule Collection: | A small quantity of seed (0.14 lb) was hand collected on August 9, 2007 by clipping a portion of the dried flower stalk and placing them into large paper bags. Seed was collected from 400 plants. A 1” x 1” piece of No-Pest Strip was placed in each seed bag for a minimum of 48 hours to reduce potential insect predation. Seed was air dried in paper bags at room temperature prior to sending it to the Bend Seed Extractory for cleaning. | ||
| Propagule Processing: | According to Barner (2008 - Propagation protocol for production of Phacelia hastata, USDA FS - R6 Bend Seed Extractory, Bend, OR. In: Native Plant Network. URL: http://www.nativeplantnetwork), seed was cleaned using a Westrup Model LA-H laboratory brush machine, with a #14 mantel, at medium speed. Lot was then air-screened using an office Clipper, with a top screen, 1/18 round and a bottom screen, 1/25 round, medium speed, medium air. Seed fill was 95% (determined by X-ray), with 96% purity and 467,000 seeds/lb. | ||
| Pre-Planting Treatments: | Seed was stored in a cool, dry, and dark location prior to sowing. | ||
| Establishment Phase: |
On January 29, 2014, 5 dry seeds were direct sown into each container at approximately ¼” depth. Soil was a 2:1:5 mix of lava fines, perlite and Sunshine Mix #4. After sowing, the soil surface was lightly covered with chicken grit. Containers were watered thoroughly and placed outside, where they would receive the necessary 30-60 days of cold stratification (reported in the literature). No fertilizer was added to the soil mix. In 2014, first emergence was observed on March 11, 40 days after sowing. On February 24, 2015 (one year plus one month later), the above treatment was repeated with the same seed lot (SOS-ID930-B19-07). First emergence was observed on March 17, 21 days after sowing. Containers were kept somewhat moist during both 2014 and 2015. In 2014, conditions in Boise were wetter than average. In 2015, conditions were dry and warm and containers were hand irrigated more frequently to maintain these conditions. Germination was estimated at 80% or higher in both years. Seed viability did not noticeably decline from 2014 to 2015. Full emergence was reached by the end of May or first week of June both years, or within 3-4 months. As seedlings developed secondary leaves and if there was more than one per container, they were gently removed with a butter knife and placed into a separate 5.5” container. One seedling per container was our preferred result. |
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| Length of Establishment Phase: | 3-4 months | ||
| Active Growth Phase: | Containers were kept outside on nursery tables through the growing season, but moved under 55% shade cloth in mid-June. Containers were allowed to dry slightly between near daily hand waterings. A weak fish emulsion fertilizer was applied several times in June and again in August and early September. Plants remained outside until outplanting in September or October, once fall rains arrived. Shade cloth was removed in mid-September both years. | ||
| Length of Active Growth Phase: | About 6 months | ||
| Outplanting performance on typical sites: | Hand plant in September or early October after fall rains begin. If the fall is dry, irrigation greatly enhanced survival. Seedlings planted in spring 2015 experienced high mortality. Conditions were warm and dry from February through April and seedlings received no supplemental irrigation. | ||
| References: | Intermountain Flora. Vascular Plants of the Intermountain West, U.S.A. Vol. 4. Subclass Asteridae. Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, P.K. Holmgren. Bronx: New York Botanical Garden. 1984. | ||
Citation:
DeBolt, Ann . 2016. Propagation protocol for production of Container (plug) Phacelia hastata Douglas ex Lehm. Plants 2.8" x 5.5" 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.
