Learn Your Lawn & Landscape. Learn about turf grasses, native plants, how to landscape/plan your yard, & trees to use in your yard. This program is great for new landowners! The program cost is $35 per person, with lunch included. RSVP by September 20th by coming by the Extension Office (cash or check only), or register online using the link below (small online fee). For more information, please contact the Gillespie County Extension Office at (830) 997-3452.