Neighborhood plant clinics will be held on Saturdays during April and May at six public libraries in Fairfax County and two in Montgomery County, sponsored by the Cooperative Extension Services of Maryland and Virginia in cooperation with the National Capital Area Federation of Garden Clubs.

Seventy-five volunteers representing 29 garden clubs of the federation have participated in training sessions to qualify them to serve as plant consultants and to answer questions from the gardening public.

Training sessions, which were conducted by persennel from the Department of Extension and Continuing Education in Fairfax County and at Virginia Tech, covered a variety of subjects including lawn management, home landscaping, indoor plants, insect and disease problems, woody ornamentals and vegetable gardens.

The plant clinics will be open from 10 a.m. to 2 p.m. each Saturday. In Fairfax County they will be held at Dolley Madison Library, McLean; Geroge Mason Regional Library, Annandale; Kings Park Library, Burke; Patrick Henry Library, Vienna; Reston Regional Library, Reston; and Sherwood Regional Library, Alexandria.

In Montgomery County the plant clinics will be held at Davis Library, Bethesda, and White Oak Library, Silver Spring.

Gardeners are invited to bring samples of their problem plants to the clinics for identification and diagnosis.

For plant identification, bring a twig or stem, leaf and flower or seed.

For diagnosis, bring a sample containing both good plant material and sick plant material; for example, an eight-inch square of lawn showing one-half live grass and one half dead grass.

For weed identification, bring an entire plant.

In the case of a woody plant, bring one 6-to-18-inch branch of healthy plant material with foliage and the same size branch showing sick plant foliage.

Brings insects in a clear, plastic botle.

Subjects that will be covered for indoor plants will be watering, potting and repotting, insect control, disease control, fertilizing and identification.

For lawns the subjects to be covered include insect control, disease control, varieties, fertilizing, when to seed and maintenance.

For landscaping: maintenance of trees and shrubs, drainage, hedges, good home design and plant selection.

For fruits and vegetables: insect control, disease control, varieties, planting harvesting, spraying, fruit tree pruning and identification.

Similar clinics last year had an attendance of over 2,000.