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Abstract
This large-flowered, hybrid, deciduous magnolia flowers profusely in late spring, about two weeks after most saucer magnolias, but before foliage emerges. This allows ‘Jon Jon’ to miss spring freezes that often damage saucer and other spring-flowering magnolias. This 2-page fact sheet was written by Gary W. Knox and published by the UF Department of Environmental Horticulture, October 2011.
References
Blythe, E. K., W. Dunwell, E. Bush, J. W. Adelberg, M. Arnold, R. Bracy, Y. Chen, D. Fare, W. Klingeman, P. Knight, G. Knox, A. V. LeBude, J. Lindstrom, A. X. Niemiera, A. Owings, J. Robbins, J. Ruter, and T. P. West. 2010. "Nursery Crop and Landscape Systems Plant Evaluations by SERA-27 in the Southeastern U.S.: 2010 Update." Comb. Proc. Intl. Plant Prop. Soc. 60 (forthcoming).
Knox, G. W. 2001. "New and Improved Deciduous Magnolia Cultivars." Comb. Proc. Intl. Plant Prop. Soc. 51: 601-603.
Knox, G. W., J. Lindstrom, T. Ranney, E. Bush, A. Owings, W. Dunwell, and R. Beeson. 2011. 'Jon Jon' Magnolia: A Late-Flowering Deciduous Magnolia Recommended for Zones 6b to 8b in the Southeastern U.S., Final Report. Southern Extension and Research Activities/Information Exchange Group 27 (SERA-IEG-27) for Nursery and Landscape Systems.
Parris, J. K., T. G. Ranney, H. T. Knap, and W. V. Baird. 2010. "Ploidy Levels, Relative Genome Sizes, and Base Pair Composition in Magnolia." J. Amer. Soc. Hort. Sci. 135 (6): 533-547. https://doi.org/10.21273/JASHS.135.6.533