Recent tree scourge poses garden threat

From Milwaukee, Wisc., at a meeting of the American Phytopathological Society

Lab tests suggest that a lethal disease of oak trees in California and Oregon could strike some popular garden shrubs in the rhododendron family. Caused by the funguslike microbe Phytophthora ramorum (SN: 8/5/00, p. 86; SN 8/3/02, p.