{"id":1041,"date":"2022-08-26T15:20:20","date_gmt":"2022-08-26T15:20:20","guid":{"rendered":"https:\/\/agsci.colostate.edu\/degree\/doctor-of-philosophy-in-horticulture\/"},"modified":"2026-04-15T21:04:44","modified_gmt":"2026-04-15T21:04:44","slug":"doctor-of-philosophy-in-horticulture","status":"publish","type":"degree","link":"https:\/\/agsci.colostate.edu\/hortla\/degree\/doctor-of-philosophy-in-horticulture\/","title":{"rendered":"Ph.D. in Horticulture"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; fullwidth=&#8221;on&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_fullwidth_image src=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2022\/02\/Orange-grove-1.jpg&#8221; alt=&#8221;Orange grove.&#8221; title_text=&#8221;Orange-grove&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_fullwidth_image][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;20px||41px|||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_3,2_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_sidebar area=&#8221;et_pb_widget_area_11&#8243; _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; body_text_color=&#8221;#414141&#8243; global_colors_info=&#8221;{}&#8221;][\/et_pb_sidebar][\/et_pb_column][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;Squiggle &#8211; Aligned Left&#8221; _builder_version=&#8221;4.17.6&#8243; _module_preset=&#8221;default&#8221; header_text_align=&#8221;center&#8221; background_enable_color=&#8221;off&#8221; custom_padding=&#8221;||4%||false|false&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n\t\t<div style=\"width: 146px; height: 8px; max-width: 100%; position: relative;\">\n\t\t\t<svg\n                width=\"100%\"\n                height=\"100%\"\n                xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n                x=\"0\" y=\"0\"\n                viewBox=\"0 0 145.1 8\"\n                xml:space=\"preserve\"\n                style=\"position: absolute; top: 0\"\n            >\n\t\t\t\t<path\n\t\t\t\t\td=\"M144.1 4c-3.6 3.3-10.7 3.3-14.3 0S119.1.7 115.5 4s-10.7 3.3-14.3 0S90.4.7 86.9 4 76.1 7.3 72.6 4 61.8.7 58.3 4 47.5 7.3 43.9 4 33.2.7 29.6 4 18.9 7.3 15.3 4 4.6.7 1 4\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"#f15727\"\n\t\t\t\t\tstroke-width=\"3\"\n\t\t\t\t\/>\n\t\t\t<\/svg>\n\t\t<\/div>\n\t\t\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; text_line_height=&#8221;1.6em&#8221; header_font_size=&#8221;36px&#8221; header_font_size_tablet=&#8221;32px&#8221; header_font_size_phone=&#8221;24px&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h1>Doctor of Philosophy in Horticulture<\/h1>\n<p>The Doctor of Philosophy in Horticulture program develops a horticulture graduate student into a professional horticulturist on the highest plane. The Ph.D. is the highest earned degree offered by universities. It is only conferred for independent work of distinction in which the student displays original scholarship of marked ability and achievement. The Ph.D. program aims to:<\/p>\n<ul>\n<li>Provide an opportunity for advanced study and specialization in horticulture<\/li>\n<li>Assist the student in developing proficiency in independent scientific investigation<\/li>\n<li>Allow the student to rigorously acquire and develop new knowledge, technical skills, communication skills, and creative problem-solving capabilities that enable them to conduct advanced research in horticulture.<\/li>\n<li>The Ph.D. program requires that the student conducts an independent research investigation, reports the results in both a written dissertation and a peer reviewed publication, and defends the dissertation in a final oral exam, or defense.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/agsci.colostate.edu\/hortla\/graduate-studies-in-horticulture\/\">Visit the Graduate Studies in Horticulture page on for more details<\/a><\/p>\n<p><a href=\"https:\/\/agsci.colostate.edu\/hortla\/graduate-studies-in-horticulture\/phd-in-horticulture-program-of-study\/\">Browse Program of Study<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Where You&#8217;ll Find Us&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#F1F1F1&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; collapsed=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;Squiggle &#8211; Centered&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n\t\t<div style=\"width: 146px; height: 8px; max-width: 100%; position: relative; margin-left: auto; margin-right: auto;\">\n\t\t\t<svg\n                width=\"100%\"\n                height=\"100%\"\n                xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n                x=\"0\" y=\"0\"\n                viewBox=\"0 0 145.1 8\"\n                xml:space=\"preserve\"\n                style=\"position: absolute; top: 0\"\n            >\n\t\t\t\t<path\n\t\t\t\t\td=\"M144.1 4c-3.6 3.3-10.7 3.3-14.3 0S119.1.7 115.5 4s-10.7 3.3-14.3 0S90.4.7 86.9 4 76.1 7.3 72.6 4 61.8.7 58.3 4 47.5 7.3 43.9 4 33.2.7 29.6 4 18.9 7.3 15.3 4 4.6.7 1 4\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"#f15727\"\n\t\t\t\t\tstroke-width=\"3\"\n\t\t\t\t\/>\n\t\t\t<\/svg>\n\t\t<\/div>\n\t\t\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|||on|||||&#8221; header_2_text_align=&#8221;center&#8221; header_2_text_color=&#8221;#1E4D2B&#8221; header_2_font_size=&#8221;36px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Where You&#8217;ll Find Us<\/h2>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_3,1_3,1_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#F1F1F1&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;CSU Horticulture Center&#8221; image=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/10\/pgf-about-page-1-1.jpg&#8221; alt=&#8221;Plants in a greenhouse&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; header_level=&#8221;h3&#8243; header_font=&#8221;|||on|||||&#8221; header_text_align=&#8221;center&#8221; header_font_size=&#8221;22px&#8221; border_width_top=&#8221;4px&#8221; border_color_top=&#8221;#F15625&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>A center for teaching, research and extension for horticulture and landscape programs.<\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;Agricultural Research and Development Center &#8221; image=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2022\/01\/ARDEC-1.jpg&#8221; alt=&#8221;Teaching at ARDEC.&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; header_level=&#8221;h3&#8243; header_font=&#8221;|||on|||||&#8221; header_text_align=&#8221;center&#8221; header_font_size=&#8221;22px&#8221; border_color_top=&#8221;#F15625&#8243; border_width_top_image=&#8221;4px&#8221; border_color_top_image=&#8221;#F15625&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Work directly with crops and livestock at this research and teaching complex \u2014 one of nine around the state.<\/p>\n<p><a href=\"https:\/\/agsci.colostate.edu\/research-and-engagement\/research-centers\/agricultural-research-development-and-education-center\/\">Learn More about ARDEC<\/a><\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;Annual Flower Garden Trials&#8221; image=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/09\/hla-about-page-3-1.jpg&#8221; alt=&#8221;Field of flowers&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; header_level=&#8221;h3&#8243; header_font=&#8221;|||on|||||&#8221; header_text_align=&#8221;center&#8221; header_font_size=&#8221;22px&#8221; border_width_top=&#8221;4px&#8221; border_color_top=&#8221;#F15625&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>One of the top tourist attractions in Fort Collins. Explore more than 1,000 varieties at this campus flower garden.<\/p>\n<p><a href=\"http:\/\/flowertrials.colostate.edu\/\">Visit the Flower Trials Website<\/a><\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/04\/icon-interest-1.png&#8221; alt=&#8221;Interest&#8221; title_text=&#8221;icon-interest&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/04\/divder-line-orange-small-1.png&#8221; alt=&#8221;Orange divider line&#8221; title_text=&#8221;divder-line-orange-small&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; header_text_align=&#8221;left&#8221; header_2_text_align=&#8221;left&#8221; header_2_font_size=&#8221;36px&#8221; header_3_font=&#8221;||||||||&#8221; header_3_text_color=&#8221;#414141&#8243; header_2_font_size_tablet=&#8221;32px&#8221; header_2_font_size_phone=&#8221;24px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font_size_tablet=&#8221;&#8221; header_3_font_size_phone=&#8221;20px&#8221; header_3_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Related Interests<\/h2>\n<ul>\n<li>Agriculture<\/li>\n<li>Business Management<\/li>\n<li>Floriculture<\/li>\n<li>Food Crops<\/li>\n<li>Plants<\/li>\n<li>Science<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/04\/icon-careers-1.png&#8221; alt=&#8221;Career Icon&#8221; title_text=&#8221;icon-careers&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/wp-content\/uploads\/2021\/04\/divder-line-orange-small-1.png&#8221; alt=&#8221;Orange divider line&#8221; title_text=&#8221;divder-line-orange-small&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; header_text_align=&#8221;left&#8221; header_2_text_align=&#8221;left&#8221; header_2_font_size=&#8221;36px&#8221; header_3_font=&#8221;||||||||&#8221; header_3_text_color=&#8221;#414141&#8243; header_2_font_size_tablet=&#8221;32px&#8221; header_2_font_size_phone=&#8221;24px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; header_3_font_size_tablet=&#8221;&#8221; header_3_font_size_phone=&#8221;20px&#8221; header_3_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>\u00a0Related Careers<\/h2>\n<ul>\n<li>Biotechnologist<\/li>\n<li>Extension Specialist<\/li>\n<li>Floriculturist<\/li>\n<li>Fruit and Vegetable Producer<\/li>\n<li>Greenhouse Production Specialist<\/li>\n<li>Horticultural Therapist<\/li>\n<li>Plant Breeder<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Graduate Student Support Team&#8221; _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#F1F1F1&#8243; locked=&#8221;off&#8221; collapsed=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.19.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.19.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;squiggle&#8221; _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||1%||false|false&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n\t\t<div style=\"width: 146px; height: 8px; max-width: 100%; position: relative; margin-left: auto; margin-right: auto;\">\n\t\t\t<svg\n                width=\"100%\"\n                height=\"100%\"\n                xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n                x=\"0\" y=\"0\"\n                viewBox=\"0 0 145.1 8\"\n                xml:space=\"preserve\"\n                style=\"position: absolute; top: 0\"\n            >\n\t\t\t\t<path\n\t\t\t\t\td=\"M144.1 4c-3.6 3.3-10.7 3.3-14.3 0S119.1.7 115.5 4s-10.7 3.3-14.3 0S90.4.7 86.9 4 76.1 7.3 72.6 4 61.8.7 58.3 4 47.5 7.3 43.9 4 33.2.7 29.6 4 18.9 7.3 15.3 4 4.6.7 1 4\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"#f15727\"\n\t\t\t\t\tstroke-width=\"3\"\n\t\t\t\t\/>\n\t\t\t<\/svg>\n\t\t<\/div>\n\t\t\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Text&#8221; _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; header_2_font_size=&#8221;36px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2 style=\"text-align: center;\">Graduate Student Program Contacts<\/h2>\n<p style=\"text-align: center;\">Please reach out with questions about our graduate programs.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.20.0&#8243; _module_preset=&#8221;default&#8221; background_enable_color=&#8221;off&#8221; width=&#8221;100%&#8221; custom_padding=&#8221;||||true|true&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.19.5&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#FFFFFF&#8221; custom_padding=&#8221;4%|4%|4%|4%|true|true&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/hortla\/wp-content\/uploads\/sites\/142\/2024\/11\/davina-rhodes-260&#215;293-1.jpg&#8221; alt=&#8221;Davina Rhodes&#8221; title_text=&#8221;davina-rhodes-260&#215;293&#8243; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; border_width_top=&#8221;4px&#8221; border_color_top=&#8221;#F15625&#8243; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text admin_label=&#8221;Text&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_font_size=&#8221;36px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3 style=\"text-align: center;\">Davina Rhodes<\/h3>\n<h4 style=\"text-align: center;\"><span>Associate Professor, Graduate Program Director<\/span><\/h4>\n<p style=\"text-align: center;\"><a href=\"mailto:davina.rhodes@colostate.edu\">davina.rhodes@colostate.edu<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#FFFFFF&#8221; custom_padding=&#8221;4%|4%|4%|4%|true|true&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/agsci.colostate.edu\/divi-hortla\/wp-content\/uploads\/sites\/142\/2022\/11\/karen-allison-website.jpg&#8221; alt=&#8221;Karen Allison&#8221; title_text=&#8221;Colorado State University&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.19.2&#8243; _module_preset=&#8221;default&#8221; border_width_top=&#8221;4px&#8221; border_color_top=&#8221;#F15625&#8243; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text admin_label=&#8221;Text&#8221; _builder_version=&#8221;4.19.2&#8243; _module_preset=&#8221;default&#8221; header_2_font_size=&#8221;36px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3 style=\"text-align: center;\">Karen Allison<\/h3>\n<h4 style=\"text-align: center;\">Graduate Program Coordinator<\/h4>\n<p style=\"text-align: center;\"><a 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