University of Maryland Extension

Plant Clinics

Master Gardeners at a Farmers' Market

What do Plant Clinics Offer?  Ask a Master Gardener

At our Plant Clinics, Master Gardeners offer free advice to residents on a very wide range of garden questions. For example, we can help novice vegetable growers, residents from another state on our different soil and climate, advise on sorting out heirloom plants and invasive weeds in an inherited old garden, and compare notes with computer-literate and experienced gardeners. We may refer residents to specialists at the Home and Garden Information Center (HGIC) and relevant universities when necessary. It will be very helpful if residents bring clear plant and insect samples (read this page) and information about sun and shade, slopes and water flows in their gardens. Click here to view a video of one of our many plant clinics.

In more detail, what can Master Gardeners do for you?

  • Help you select and care for annual and perennial plants, shrubs and trees.
  • Determine if you need to test your soil.
  • Provide you with information on lawn care.
  • Identify weeds, beneficial and noxious insects, and plant diseases and remedies.
  • Teach you how to use pesticides, mulch and compost.
  • Guide you in pruning trees and shrubs.
  • Provide you with options for managing wildlife.
  • Provide you with gardening resources.
  • Help you submit a plant sample for diagnosis

Regularly scheduled Plant Clinics are located at public libraries and farmers' markets throughout the county as well as at the Audubon Naturalist Society in Chevy Chase.  There are also clinics three days per week at Brookside Gardens.  The busiest season is April through September, but some clinics are open year-round.  Clicking on the links below will provide you with a map showing the location of that Plant Clinic.

Plant Clinic locations and the dates/times of operation:

Bethesda Davis Library
6400 Democracy Blvd. Bethesda, Md.
April 7-September 29: Saturday, 10 am - 1 pm

Burtonsville Praisner Library
14910 Old Columbia Pike Burtonsville, Md. 20866
April 7-September 29: Saturday, 10 am - 1 pm

Derwood Extension Office
18410 Muncaster Rd Derwood, Md. 20855

Telephone hotline  March 6-October 30: Tuesdays 10 am - 1 pm 301-590-2842

Gaithersburg/Kentlands Farmer's Market
301 Main St.  Kentlands, Md 20878
May 5-October 6: First Saturday of each month, 9 am - 2 pm

Gaithersburg Library
18330 Montgomery Village Ave. Gaithersburg, Md.
April 7-September 29: Saturday, 10 am - 2 pm

Gaithersburg/Darnestown Quince Orchard Library
15831 Quince Orchard Rd. Gaithersburg, Md.
May 5-September 29: Saturday, 10 am - 1 pm

Germantown Library
19840 Century Blvd.
Germantown, Md.
May 2-September 26: Wednesday, 6:15 pm - 7:45 pm

Kensington Farmer's Market
Marc Train Station on Howard Avenue, Kensington, Md
April 14-October 13: Second Saturday each month 9 am - 1 pm 

Olney Farmers Market
Prince Philip Drive and Route 108, Olney, Md.
May 13-November 4: Sunday, 9 am - 1 pm

Rockville Twinbrook Library
202 Meadow Hall Drive Rockville, Md 20851
April 7-September 29: Saturday, 10 am - 1 pm

Rockville Pike Central Farm Market
Rose and Pike Shopping Center Parking Lot, Intersection of Rockville Pike and Old Georgetown Road, North Bethesda, Md.
One Saturday per month 4/28, 5/19, 6/16, 7/21, 8/18, 9/15, 10/13, 9 am - 1:30 pm

Silver Spring Library
900 Wayne Ave.
Silver Spring, Md March 3-October 27: Saturday,  10 am - 1 pm

Wheaton Brookside Gardens
1800 Glenallan Ave Wheaton, MD 20902-1369
February 17-November 17: Saturday, 10 am - 1 pm and February 18-November 18: Sunday, 1 pm - 4 pm
April 4-September 26: Wednesday, 1 pm - 4 pm

Master Gardeners at a Library Plant Clinic

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