Sibbaldia (procumbens)
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Mark E. Majerus USDA NRCS - Bridger Plant Materials Center 99 South River Road, Rte. 2, Box 1189 Bridger, Montana 59014-9718 (406) 662-3579 (406) 662-3428 (fax) mmajerus@mt.nrcs.usda.gov http://plant-materials.nrcs.usda.gov/mtpmc |
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| Family Scientific Name: | Rosaceae | ||
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| Family Common Name: | Rose Family | ||
| Scientific Name: | Sibbaldia procumbens L. | ||
| Common Name: | Creeping sibbaldia | ||
| Species Code: | SIBPRO | ||
| Ecotype: | Logan Pass, Glacier National Park | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| Time To Grow: | 0 | ||
| Propagule Processing: | Cleans to a pure product quite easily. Pulverize seed heads in a hammermill using a #5 (0.08-inch diameter holes) screen. Run processed material over a fanning mill using a 1/12 to 1/16 screen with high wind to remove light seed and chaff from good seed. | ||
| Pre-Planting Treatments: |
Some seeds will germinate after 6 months of cold moist chilling. It is not known if this represents an optimum treatment because various cold chilling durations have not been compared and original seed vaibility had not been determined. Most experience with this species comes from a 6-month cold moist chilling in a refrigerator maintained at 34 to 37øF. The seeds were sown on germination pads in petri dishes and kept moist for the duration of the cold chill. The stratified seeds were subsequently exposed to 3 irradiance levels (full, partial, zero) in an environmental growth chamber maintained at 86øF days for an 8-hour daylight photoperiod and 68øF nights for 16 hours. Each treatment consisted of 5 reps of 25 seed/rep. This species was sensitive to decreasing light intensities from the full to partial and zero irradiance. Germination decreased from 25.6% at full irradiance (mean 268 footcandles) to 6.4% at partial (mean 23 foot candles) and 0% at zero irradiance. This species had high seedling mortality at the full and partial irradiance levels with 28.12% and 50%, respectively. There was, however, a measurable gain in the germination (+8% after 32 days; 17.6% after 61 days) of the zero irradiance treatments when exposed to a secondary full irradiance. |
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| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Grows well in well-drained commercial peat-lite mix. | ||
| Hardening Phase: | Move containerized material (at least 2 months old) started in thegreenhouse that winter to an outdoor hoophouse in late spring/early summer (i.e. "finish" the plants in the hoophouse). The hoophouse is ventilated but not cooled, and the containers are usually exposed to full sunlight for 2 to 4 weeks early in the season. The hoophouse is then covered with a 50% shade cloth until temperatures cool in the fall. Another option is to finish container plants and rooted cuttings in the greenhouse and then move them to the shadehouse in late summer, allowing 30 to 60 days of hardening prior to winter. The shade is usually removed in late summer/early fall and replaced with clear plastic. The plants harden-off gradually in the hoophouse prior to winter. Bridger is characterized by a high number of solar days that keeps the environment inside the hoophouse relatively mild until winter. In the case of premature and severely cold weather, a small propane heater is used at keep temperatures above freezing. | ||
| Length of Hardening Phase: | As a standard practice, we allow a minimum of 30 days of hardening off prior to killing frost, 60 days is preferred. | ||
| Harvesting, Storage and Shipping: | One-year plants overwintered well in 10-cubic-inch conetainers in an outdoor hoophouse. The hoophouse is ventilated when temperatures reach 35 to 40øF and heated to maintain a temperature of 5 to 10øF. The containers are placed on 2 inches of pea gravel and arranged in a side-by-side pattern. The stock is watered over the fall and winter as needed. If temperatures in the spring are too warm to assure dormancy, plant material that is designated for dormant spring planting is moved to a walk-in cooler (34 to 37øF, 80+% relative humidity) until shipping. Plants may be shipped with or without containers in heavy waxed boxes by priority ground mail (avoid weekend holdover at post offices). | ||
| Length of Storage: | No information. Overwinter well in an unheated hoophouse as previously described. | ||
| Other Comments: | Easy to grow as seedlings in containers. Study results indicate that a 6-month cold moist chilling is adequate to break dormancy, although the optimum amount of cold chilling was not determined. Germination is effected negatively by reduced irradiance below the full irradiance level. During propagation from seeds, provide adequate intensities of light. Increase seeding rates to meet target cover or species composition when using mulch or agronomy cloth. Removal of mulch or agronomy cloth at the proper time may result in additional germination of this species. | ||
Citation:
Scianna, Joe. 2003. Propagation protocol for production of Container (plug) Sibbaldia procumbens L. plants USDA NRCS - Bridger Plant Materials Center Bridger, Montana. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
