Asclepias (subverticillata)
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Charles Eckman Biological Science Technician USDA FS - Rocky Mountain Research Station 1221 South Main Street Moscow, Idaho, Idaho 83843 208-883-2360 ceckman@fs.fed.us www.fs.fed.us/rm/boise |
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| Family Scientific Name: | Asclepiadaceae | ||
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| Family Common Name: | milkweed | ||
| Scientific Name: | Asclepias subverticillata | ||
| Common Name: | horsetail milkweed | ||
| Species Code: | ASSU2 | ||
| Ecotype: | Flagstaff, AZ N35.2209/W-111.58453 | ||
| General Distribution: | Horsetail milkweed is found in Central Western and Southwestern US states including; AZ,CO,ID,KS,MO,NE,NM,NV,OK,TX,UT, and WY. | ||
| Known Invasiveness: | |||
| Propagation Goal: | Plants | ||
| Propagation Method: | Seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | Cone | ||
| Target Specifications: | Firm plug | ||
| Propagule Collection: | Seed collected by hand. Follicles and coma easily removed by hand. A screen or an air column separator also aids in cleaning seed. | ||
| Pre-Planting Treatments: |
Treatment 1 Seed received a 48 h soak in a stream of running water, followed by 28 d cold moist stratification. Treatment 2 Seed received a 48 h soak in a stream of running water, and no stratification. Treatment 3 Seed received a 48 h soak in a stream of running water, followed by 6 weeks of cold moist stratification. Treatment 4 Seed received a 48 h soak in a stream of running water, followed by 10 weeks of cold moist stratification. |
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| Growing Area Preparation/ Annual Practices for Perennial Crops: |
3-5 seeds a cone sowed into a Sun Gro custom mix (40-50% sphagnum moss, vermiculite and aged fine bark). Cells were filled to the top, and the tray was pounded to remove air space. Then the cells were refilled to the top and the medium was brushed away to make room for seed and grit, about 10 ml was removed. A total of 98 cones were sown, with each species having 49 cones. Seeds were sown 1cm deep and covered with soil and a light covering of grit. Greenhouse conditions were 21 C days, 10 C nights and 16 h of light. The first signs of germination occurred 7 days after sowing. Treatments 1,2 emerged 7-10 days after planting. Treatments 3,4 germinated 5 days after planting. All treatments had a germination rate of 95% or greater 14 days after first emergence. A longer cold moist stratification period seems to increase germination time. |
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Citation:
Eckman, Charles . 2017. Propagation protocol for production of Container (plug) Asclepias subverticillata Plants Cone; USDA FS - Rocky Mountain Research Station Moscow, Idaho, Idaho. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/10). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
