Notes about your surroundings.

EVENTS: Today is a busy day on the county’s outdoor scene. The Fullerton Arboretum, on the northeast corner of the Cal State Fullerton campus, continues its “Green Scene” plant sale and exhibition from 10 a.m. to 4 p.m. The Orange County Turtle and Tortoise Society holds its annual show in the Martin Recreation Center at La Palma Park, Harbor Boulevard and Lemon Street in Anaheim, also from 10 a.m. to 4 p.m.

The “Imagination Celebration,” events designed to expose children to the arts, moves to Laguna Niguel Regional Park today from 10 a.m. to 4 p.m. In addition to art exhibits, demonstrations and activities, there will be nature-oriented displays.