Jeremy M. Pickens

Assistant Extension Professor


(251) 342-2366 


Get In Touch

Ornamental Horticulture Research Center
PO Box 8276
Mobile, AL 36689-0276



  • Ph.D. Auburn University
  • M.S. Auburn University
  • B.S. Auburn University


  • Alabama Nursery and Landscape Association
  • Southern Nursery Association
  • International Plant Propagators Society
  • National Greenhouse Manufacturers Association
  • Alabama Fruit and Vegetable Growers Association
  • Southern Christmas Tree Association
  • American Society for Horticulture Science
  • Entomological Society of America
  • Alabama Association of County Agricultural Agents and Specialist
  • National Association of County Agricultural Agents


  • Irrigation efficiency in container nurseries
  • Root-zone temperature in conainer nursery production
  • Application efficiency of granular preemergent herbicides
  • Greenhouse cooling efficiency
  • Plant nutrition and nutrient use effeciency
  • Pest management in container nurseries
  • Christmas tree production




  • McBrayer, R.H., J.M. Pickens, A.L. Witcher, D.E. Wells, and J.L. Sibley. 2022. Effects of nursery container color and spacing on root zone temperatures of ‘Soft Touch Holly’. Agriculture 12:2165.
  • Wallace-Springer, N., D.E. Wells, J.M. Pickens, E. Ayipio, and J. Kemble. 2022. Effects of hydraulic retention time of aquaculture effluent on nutrient film technique lettuce productivity. Agronomy 12:2570.
  • Blanchard, C., D.E. Wells, J.M. Pickens and D.M. Blersh. 2020. Effect of pH on cucumber growth and nutrient availability in a decoupled aquaponic system with minimal solids removal. Horticulturae 6 (1):10.
  • Marble, S.C. and J.M. Pickens. 2020. Tolerance of three deep south non-turf ornamental groundcovers to applications of postemergence herbicides. J. of Environ. Hort. 38(3) 91-100.
  • Witcher, A., J.M. Pickens, and E. Blythe. 2020. Container color and compost substrate affect root zone temperature and growth of “Green Giant” Arborvitae. Agronomy 10(4):484
  • Witcher, A., J.M. Pickens, and E. Blythe. 2020. Container type and substrate affect root zone temperature and growth of ‘Green Giant’ Arborvitae. Horticulturae 6 (2):22.
  • Krofft. C., J.M. Pickens, A. Newby, J.L. Sibley, G. Fain. 2020. The effect of leaching fraction-based irrigation on fertilizer longevity and leachate nutrient content in a greenhouse environment. Horticulturae 6(3):43.
  • Pickens. J.M., J.J. Danaher, J.L. Sibley. J.C. Chappell, and T.H. Hanson. 2020. Integrating greenhouse cherry tomato production with biofloc tilapia production. Horticulturae 6(3):44
  • Pattillo, A., W.G. Foshee, E. Blythe, J.M. Pickens, D. Wells. T.A. Monday, and T. Hanson. 2020. Performance of aquaculture effluent for tomato production in outdoor raised beds. HortTechnology 30(5):1-8.
  • Murphy, A.M., G.B. Runion, S.A. Prior, H.A. Torbert, J.L. Sibley, G.B. Fain, and J.M. Pickens. 2019. Effects of fertilizer placement on greenhouse gas emissions from a sun and shade grown ornamental crop. J. Environ. Hort. 37:74-80.
  • Sydney C. Holmes, Daniel E. Wells *, Jeremy M. Pickens, Joseph M. Kemble. 2019. Selection of heat tolerance and sensory evaluation of Lactuca sativa L. cultivars grown in in deep water culture. Horticulturae. 5:50
  • Sibley, J.L. X. Yang, W. Lu, D.J. Eakes, C.H. Gilliam, W.G. Foshee, J.M.
    Pickens and B. Zinner. 2018 Effects of a nonionic surfactant on growth, photosynthesis, and transpiration of New Guinea impatiens in the greenhouse. J. Environ. Hort. 36(2) 73-81.
  • Sibley, J.L. X. Yang, W. Lu, D.J. Eakes, C.H. Gilliam, W.G. Foshee,
    B. Zinner.and J.M. Pickens. 2018. ‘Effects and Cost Estimation of an Irrigation Applied Surfactant in Greenhouse Crop Production. Food Studies.
  • Beauchamp, W.R., J.M. Pickens. J.L. Sibley, J.A. Chappell, N.R. Martin, A.F.
    Newby, and. 2017. Response of bibb lettuce to salt additives in integrated aquaponic systems. Inter. J. Veg. Sci. 2017.1378787

Conference Proceedings & Non-refereed Articles (Past Five Years)

  • J. Pickens and D. Held. 2021. Efficacy of various products for managing carpenter worm on oak, 2017. Arthropod Management Test 46 TSAB 103. (Editor reviewed technical article).
  • D. Held, J. Pickens, and K. Owsley. 2021. Effect of application timing on the efficacy of spinosad against Chilli thrips on potted Cleyera, 2019. Arthropod Management Test 46 TSAB 124. (Editor reviewed technical article).
  • Owsley, K., J. Pickens, J. Olive and D. Held. 2021. Comparison of plant protectants as a foliar spray against Chilli thrips, 2018. Arthropod Management Test 46 TSAB 102. (Editor reviewed technical article).
  • A.M. Murphy, S.A. Prior, G.B. Runion, H.A. Torbert, J.L. Sibley, G.B. Fain, and
    J.M. Pickens. 2019. Greenhouse gas emissions as impacted by high wood fiber substrate in the production of three annual crops. Proc. SNA Res. Conf. 63:51-66.
  • Pickens, J.M., K.N. Conner, and J.W. Olive. 2019. Research update on bacterial
    gall of Loropetalum. Proc. SNA Res. Conf. 63:110-114.
  • Pickens, J.M., R.J. Kessler, and D.E. Wells. 2019. Evaluation of shade cloth color in cooling efficiency. Proc. SNA Res. Conf. 63:175-178.
  • Witcher, A.L. and J.M. Pickens. 2019. Effects of compost substrates on root zone temperature and growth of arborvitae. Proc. SNA Res. Conf. 63:44-50.
  • Pickens, J.M., and J.W. Olive. 2019. Effects of lime and fertilizer rate on the growth of citrus rootstock, Poncirus trifoliate var. monstrosa ‘Flying Dragon.’ Proc. SNA Res. Conf. 63:37-43.
  • Pickens, J.M., D. Held, and K. Owsley. 2019. Time of day influences
    performance of spinosad against Chilli thrips. Proc. SNA Res. Conf. 63:193-197.
  • Palmer, K., L.C. Graham, and J.M. Pickens. 2018. Let’s get the info out about crazies (tawny crazy ants, that is). NCUE need update info
  • Brown B.W., J.L. Sibley, J.M. Pickens and H.A. Torbert. 2018. Results using
    flue gas desulfurization gypsum in soilless substrates for greenhouse crops. Proc. SNA Res. Conf. 62:26-28.
  • Pickens, J.M. and A.L. Witcher. 2018. Effects of container color on root zone temperature and growth of ‘Green Giant’ Arborvitae. Proc. SNA Res. Conf. 62:2-

Extension Publications (Past Five Years)

  • Pickens, J. A. da Silva and E. Ayipio. 2023. Transplant Production for Hydroponic and Greenhouse Systems. ACES ANR 2954.
  • Blanchard, C., J. Pickens*, A. da Silva, and D. Wells. 2023. Greenhouse Tomato Production. ANR 2955
  • Pickens, J*. and D, Wells. 2022. Controlling the Greenhouse Environment for Vegetable Crops. ANR 2925.
  • Blanchard, C., J. Pickens* and D. Wells. 2022. Greenhouse Cucumber Production. ACES. ANR 2926
  • Pickens*, J., D.A. Wells, and C. Blanchard. 2022. Greenhouse Lettuce Production. ACES. ANR 2903.
  • Pickens, J., C. Marble, and S. Li. 2021. Weed Control in Container Nurseries. ACES ANR 2787.
  • Held, D., and J. Pickens. 2021. Carpenterworm in Nursery Trees. ACES. ANR 2786.
  • Held, D, and J. Pickens. 2020. Bores of Ornamental Plants, ANR 2472.
  • Krofft, C, and J. Pickens. 2020. Auditing Overhead Irrigation Systems in Container Nurseries:
  • Distribution Uniformity, ANR 2705.
  • Krofft, C, and J. Pickens. 2020. Auditing Overhead Irrigation Systems in Container Nurseries: Irrigation Rate, ANR 2704.
  • Krofft, C, and J. Pickens. 2020. Auditing Overhead Irrigation Systems in Container Nurseries: Leaching Fraction, ANR 2706.
  • Pickens, J.M., K. Burkett, P. Brown. 2019. Economic Impact of a New Greenhouse in Alabama. ACES ANR- 2590.
  • Pickens, J.M. and L.C. Graham. 2019. Fire Ant Quarantine Compliance for Container Nurseries. ACES, ANR_2557.
  • Graham, L.C., K.R. Palmer and J.M. Pickens. 2019. Managing Tawny Crazy
    Ants Around the Home ACES, ANR-2547.
  • Pickens, J.M., L.C. Graham and K.R. Palmer 2019. Managing Tawny Crazy Ants
    in Plant Nurseries. ACES, ANR-2640.
  • Held, D., and J.M. Pickens. 2018. Borer Pests of Woody Ornamental Plants. ACES, ANR-2472.
  • Held, D., and J.M. Pickens. 2018. Thrips: Pests of Ornamental Plants. ACES, ANR- 2500
  • Pickens, J.M., D. Wells, and J. Danaher. 2017. Vegetable Transplants in Aquaponic Systems. Southern Regional Aquaculture Center. Pub. No. 5011.


Extension programing is the major driver behind many of my research projects. My position provides opportunities to work closely with growers and Extension agents across the state. While my primary responsibilities revolve around ornamental production, I also work variety of specialty crops including Christmas trees and greenhouse vegetables.

Some of my current Extension projects include:

  • Developing an E-book curriculum for small to medium scale greenhouse vegetable production
  • Improving herbicide application effeciency for container nursery production
  • Updating Christmas tree fertilization and lime recommendations for Alabama
  • Building a case for improving irrigation effeciency in container nurseries

Please write to me at if you wold like to recieve our newsletter “Nursery Notes.”