It may have the most accurate name of any place in Douglas County. That’s because anybody who visits Discovery Garden for the first time recognizes the site as a real find. Launched in 2000, the garden sits on county land, just outside the entrance to River Forks Park northwest of Roseburg. It’s well-tended and cherished by members of the Master Gardeners program of the Oregon State University Extension Office. It’s well-supported and appreciated by community members who donate time, money and materials to keep the garden open from dawn to dusk, every day of the year. But the garden has …