Personalized Earth Day Arbor Day Plant Trees Youth T-Shirt. A trio of pretty green trees reminds us that we have the responsibility to keep replenishing our world's flora by planting trees when we use them. Plant more trees slogan comes on this Youth T-Shirt - Black that makes a great Earth Day gift but perfect for any time of year. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.