James Gibson Whipker, B. E., McCall, I., Gibson, J. L., & Cavins, T. J. (2004). Flurprimidol foliar sprays and substrate drenches control growth of 'Pacino' pot sunflowers. HortTechnology, 14(3), 411–414. Whipker, B. E., McCall, I., Gibson, J. L., & Cavins, T. J. (2003). Efficacy of flurprimidol (topflor) on bedding plants. ELEGANT SCIENCE IN FLORICULTURE, pp. 413–418. https://doi.org/10.17660/actahortic.2003.624.58 Gibson, J. L., Cavins, T. J., Greer, L., Whipker, B. E., & Dole, J. M. (2003). Efficacy of plant growth regulators on the growth of Argyranthemum frutescens 'Comet Pink'. ELEGANT SCIENCE IN FLORICULTURE, pp. 213–216. https://doi.org/10.17660/actahortic.2003.624.28 Gibson, J. L., & Whipker, B. E. (2003). Efficacy of plant growth regulators on the growth of vigorous osteospermum cultivars. HortTechnology, 13(1), 132–135. Gibson, J. L., & Whipker, B. E. (2001). Ornamental cabbage and kale cultivar comparison study: Growth characteristics and response to daminozide and uniconazole foliar sprays. HortTechnology, 11(3), 376–380. Gibson, J. L., & Whipker, B. E. (2001). Ornamental cabbage and kale growth responses to daminozide, paclobutrazol, and uniconazole. HortTechnology, 11(2), 226–230. Gibson, J. L., Whipker, B. E., Blankenship, S., Boyette, M., Creswell, T., Miles, J., & Peet, M. (1999). Ethylene: Sources, effects, and prevention for greenhouse-grown crops. North Carolina Flower Growers' Bulletin, 44(5), 1. Gibson, J. L., & Whipker, B. E. (1999). Research progress report: Ornamental cabbage and kale fertilization study. North Carolina Flower Growers' Bulletin, 44(6), 6. Gibson, J. L., & Whipker, B. E. (1999). Research progress report: The effect of B-Nine, Bonzi, and Sumagic on the growth of ornamental cabbage and kale. North Carolina Flower Growers' Bulletin, 44(6), 8.