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Proceedings of the International Plant Propagator's Society

Vol. 52

Vegetative Propagation of Southwestern Plants: Ambrosia deltoidea, Buddleja marrubifolia, Vauquelinia californica, and Vauquelinia corymbosa

Ursula K. Schuch, Elizabeth Davison and Jack Kelly

pp: 637-642


Vegetative propagation of four species native to the Southwestern United States is described in the following experiments. Buddleja marrubifolia is a dependable shrub for the arid landscape because it tolerates poor soil, drought, and heat. The wooly butterfly bush is known to root from softwood cuttings during springtime when treated with IBA at 5000 ppm and in summer when treated with IBA at 3000 ppm (Nokes, 2001). Hardwood cuttings of some Buddleja species have been reported to root when taken in winter. Vauquelinia californica is a popular landscape shrub with evergreen, leathery leaves. Propagation by cutting is preferred, but rooting of cuttings has proven recalcitrant (Charles, 1961; Dehgan et al., 1977). Differences in rooting were found in response to season, clone, and IBA treatments, with no one treatment consistently superior (Smith, 1982). Vauquelinia corymbosa, an evergreen shrub with leaves narrower than those of V. californica, is currently underutilized

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