WHAT TO DO when a beautiful botanical garden is overgrown with green briars, poison ivy, ragweed, and other undesirable plant species that prevent the growth of new trees? Call in the goats! Specifically, about 120 super cute goats from Rent-a-Ruminant Texas, who return to the Houston Arboretum & Nature Center on Tuesday, June 4, to partake in a week-long banquet of invasive vegetation, effectively clearing three acres south of the meadow between the South Meadow Trail and the Muscadine Trail along the Outer Loop.