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Christa Carignan



Home & Garden Information Center (HGIC) 12005 Homewood Road Ellicott City, Maryland 21042-1542


  • environmental horticulture
  • social media
  • website management
  • HGIC

Christa Carignan is the Coordinator of Digital Horticulture Education for the University of Maryland Extension (UME) Home & Garden Information Center (HGIC). Christa earned a B.S. degree in Plant Science from the University of Maryland and a B.A. in Sociology from Elizabethtown College. She is a Maryland Certified Professional Horticulturist and a Chesapeake Bay Landscape Professional (Level 1). Christa also holds a Certificate of Accomplishment in Horticulture from the Graduate School in Washington, DC, and a Pesticide Applicator License from the Maryland Department of Agriculture.

At HGIC, Christa coordinates the online Ask an Expert service; writes website, video, and social media content; and serves as co-editor of the Maryland Grows blog.

Prior to joining HGIC in 2017, Christa worked in the Entomology Department at the University of Maryland where she participated in a research project on the invasive Emerald Ash Borer. Her experience also includes work at the University of Maryland’s Plant Diagnostic Lab, Berry Pathology Lab, and Norton-Brown Herbarium. From 2009-2018, she was an active UME Master Gardener in Montgomery County where she served as a volunteer at the Brookside Gardens Plant Clinics. She also was a volunteer at the U.S. Botanic Garden and Pope Farm Nursery.

Christa has grown a variety of edible and ornamental plants as a home gardener since 2004. Her interests include cut flower production and floral design.

Please visit the Home & Garden Information Center website  for answers to your plant and pest management questions.