GROWING At left, resident Robert Disney selects a tomato plant for his garden during the Thousand Oaks Arbor/Earth Day celebration.Tracy Friedl, left, and Matthew Trouts, right, help shovel compost into bags at the April 15 event.SORTING Newbury Park resident Elodie Shum, 3, plays a recycling sorting game at the Arbor/Earth Day celebration, which took place at