Black Scoria (Lava Rock) Size:5 Quart zinc and magnesium) combined with

zinc and magnesium) combined with humic acids

it helps brush away any unwanted debris or residuals on the trunk of the tree

non-burning

6"l x 8"w x 2"h x 1

Black Scoria (Lava Rock) Size:5 Quart zinc and magnesium) combined withScoria Pebble Meaures 3 16" Available in two sizes Black Scoria, also known as Lava Rock, are rocks formed by volcanoes. Black Scoria is porous and holds a lot of moisture which helps to retain the humidity for the plant. Our Black Scoria is ready to use no need to sift. Also when fertilizing a tree, the Scoria's porousness helps to retain the fertilizer nestled in its cavity. Upon completion of fertilizing the plant, Scoria will continue to preserve