identification and confirmation—Oak root fungus
To confirm the presence of Armillaria, look for thin white leathery patches of fungus by carefully peeling
the bark away from the trunk just below the soil line; if the fungus has not girdled the vine, check
several areas. The fungus has a characteristic fresh mushroom odor and occasionally after a heavy rain
in fall it may form clusters of mushrooms at the base of infected vines. Dark shoestringlike structures
develop and grow into the healthy underground tissue.
White, leathery mycelium under the bark
may form at the base of vines