Stratification and GA3 Treatments. Journal of Environmental Horticulture. 9(1):51-56. Derek Tilley, USDA NRCS Plant Materials Center, Love, S. personal communication. University of Aberdeen, ID Idaho, Aberdeen Research and Extension Center. Meyer, S. 1992. Habitat correlated variation in Dan Ogle, USDA NRCS Idaho State Office, Boise, Firecracker Penstemon (Penstemon Gray: ID eatonii Scrophulariaceae) seed germination response. Citation Bulletin of the Torrey Botanical Club 119(3). p St. John, L., D. Tilley, and D. Ogle. 2011. Plant 268-279. Guide for Venus penstemon (Penstemon Ogle, D., L. St. John, M. Stannard, and L. Holzworth. venustus). USDA-Natural Resources Conservation Service, 2011. Conservation Plant Materials for the Plant Materials Center. Aberdeen, Idaho 83210. Intermountain West. Technical Note 24. USDA-Natural Resources Conservation Service, Revised December, 2011. Original plant guide Boise, ID. 57 p. published September, 2002. USDA-NRCS, 2006. Plants for Solving Resource Problems: Clearwater Selection Venus Edited: 29Nov2011 ls; 29Nov2011dgo; Penstemon. Aberdeen Plant Materials Center. 29Nov2011jab;30Nov2011djt 2p. Von Arx, G., Edwards, P., Dietz, H. 2006. Evidence For more information about this and other plants, for Life History Changes in High-altitude please contact your local NRCS field office or Populations of Three Perennial Forbs. Ecology Conservation District at and visit the PLANTS Web 87(3) 665-674. Ecological Science Society of site at or the Plant Materials Program Web site . America. PLANTS is not responsible for the content or Prepared By: availability of other Web sites. Loren St. John, USDA NRCS Plant Materials Center, Aberdeen, ID USDA IS AN EQUAL OPPORTUNITY PROVIDER AND EMPLOYER
Stratification and GA3 Treatments. Journal of Environmental Horticulture. 9(1):51-56. Love, S. personal communication. University of Idaho, Aberdeen Research and Extension Center. Meyer, S. 1992. Habitat correlated variation in Firecracker Penstemon (Penstemon eatonii Gray: Scrophulariaceae) seed germination response. Bulletin of the Torrey Botanical Club 119(3). p 268-279. Ogle, D., L. St. John, M. Stannard, and L. Holzworth. 2011. Conservation Plant Materials for the Intermountain West. Technical Note 24. USDA-Natural Resources Conservation Service, Boise, ID. 57 p. USDA-NRCS, 2006. Plants for Solving Resource Problems: Clearwater Selection Venus Penstemon. Aberdeen Plant Materials Center. 2p. Von Arx, G., Edwards, P., Dietz, H. 2006. Evidence for Life History Changes in High-altitude Populations of Three Perennial Forbs. Ecology 87(3) 665-674. Ecological Science Society of America. Prepared By: Loren St. John, USDA NRCS Plant Materials Center, Aberdeen, ID Derek Tilley, USDA NRCS Plant Materials Center, Aberdeen, ID Dan Ogle, USDA NRCS Idaho State Office, Boise, ID Citation St. John, L., D. Tilley, and D. Ogle. 2011. Plant Guide for Venus penstemon (Penstemon venustus). USDA-Natural Resources Conservation Service, Plant Materials Center. Aberdeen, Idaho 83210. Revised December, 2011. Original plant guide published September, 2002. Edited: 29Nov2011 ls; 29Nov2011dgo; 29Nov2011jab;30Nov2011djt For more information about this and other plants, please contact your local NRCS field office or Conservation District at and visit the PLANTS Web site at or the Plant Materials Program Web site . PLANTS is not responsible for the content or availability of other Web sites. USDA IS AN EQUAL OPPORTUNITY PROVIDER AND EMPLOYER
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