Our team of Maryland Certified Professional Horticulturists, Extension faculty, and Master Gardeners answer yard and garden questions from Maryland and Washington, DC residents only. If you live in another state, please use this form to select your own location, or contact your local university cooperative extension.

We strive to respond to your questions within 48 hours. For fastest answers, search our website first. Read our tips for submitting good photos.

  • Insect ID: photos need to be close, in focus, in good lighting, include a ruler or coin to show size.

  • Plant ID: show the entire plant, preferably with close-ups of flowers or seed heads.

  • For plant disease diagnosis: show the transition from healthy to affected plant material. Include information on the age and location of the plant(s) and soil and site conditions.

  • Attach files in JPG, PNG, GIF, or PDF format, a maximum of 8MB.