Plantra Growing Supplies | Tree Shelters | Guards | Bird Netting "Plantra, tree guards, bird netting, grow tubes, tree tubes, tree garden netting, tree wrap sleeves, weed mulch mat, tree protection supply, vine tube, tree shelter, Plantera" Plantra designs & manufactures tree protection supply products to grow seedlings and protect crops including tree tubes, tree guards, bird netting, and rigid mesh tubes.