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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 certified Chesapeake Bay Landscape Professional. Christa also holds a Certificate of Accomplishment in Horticulture from the Graduate School USA in Washington, DC, and a Pesticide Applicator License from the Maryland Department of Agriculture.

At HGIC, Christa coordinates the online Ask Extension service; writes website and social media content; and manages the Maryland Grows blog. The blog was named the Northeast Regional Winner (2022) and Maryland finalist (2020) for online/web content, in the Communication Awards hosted by the National Association of County Agricultural Agents.

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, ornamental, and Maryland native plants as a home gardener since 2004. Her interests include cut flower growing and floristry.

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