The Alkimos students were taught about gardening and sustainability as they planted native seedlings on July 24.
Clarkson store manager Peter Kingwell said the team enjoyed getting out to different schools every year to plant trees with the students.
Planet Ark's National Tree Day manager Debbie Agnew said Schools Tree Day was the largest nature care event in Australian schools.
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READ NOW"Schools are branching out in many ways to get students into nature; beautify and green the grounds, start a vertical garden or vegie patch," she said.