The Highland Lakes Master Gardener Association will offer a Green Thumb Program July 17 from 2-3 p.m. at the AgriLife Extension Office, 607 N. Vandeveer in Burnet.Speaker will be Master Gardener Lyn Mefford, who will explore aspects of “Preserving Memories and Harvest: Classic Canning, Fancy Freezing & Quickies.”The meeting is free and open to the public....