CLICK HERE for the Emerald Ash Borer signs, symtoms, removal guildlines, treatment and control options, disposal recommendations and more.
CLICK HERE for the Emerald Ash Borer signs, symtoms, removal guildlines, treatment and control options, disposal recommendations and more.
Leaf miners are insects that develop and live inside the leaves of plants. Most leaf miners are sawflies, a species of non-stinging wasp. One common exception is the spruce needle miner, which is a moth. The immature (larval) stage of these insects produces the distinctive mines. Adults lay their eggs on the leaves or insert them under the leaf surface. The leaves are injured when the larvae feed on the soft interior tissues so that only the transparent outer leaf surfaces remain.
Although leaf miners destroy the leaf they inhabit, the percentage of leaves affected is usually small. Severe infestations that recur over several years will begin to stress the plant. In the case of birch, stress can be serious because weakened birch trees are vulnerable to the bronze birch borer.