Environmental programs for pre-school through teenage youths will be offered this summer by the Reston Home Owners Association.

In the Hug-a-tree program, 3 to 5-year-olds will be taught the basics of ecology though activities like building a terrarium, taking nature walks, learning the names of flowers and identifying wildlife. Sessions will be held July 17-21, July 21-Aug. 4 and Aug. 14-18.

A Ranger Rick program is available for children from 6 to 9 years old. They will learn to take water samples, build bird feeders, map wildlife habitats and develop other environmental skills. The first week-long session will begin June 26-30, with one-hour programs each day. Other sessions begin July 10, July 24, and Aug. 7.

Children 9 through 13 years old can earn money while they learn in the Junior Trail-blazers program. The sessions will be held from 8:30 to 10:30 a.m. June 26-30, and the participants will be paid $1 each for the morning's work. Activities include helping to control erosion on stream banks, constructing coverts for wildlife, and other environmental improvement projects. Work mornings will also be held July 10-14 and Aug. 7-11.

Children must be registered in advance at the RHOA office at 1930 Isaac Newton Square.