To repair ecological damage caused by construction, landscape managers typically apply restoration techniques – but what if these activities further damage the ecology? Invasive Phytophthora pathogens have been inadvertently introduced to environmentally vulnerable and important restoration sites, often resulting in plant illness or death and the need for costly remediation. The USDA Forest Service and partners have been researching invasive pathogens in the genus Phytophthora to protect sensitive habitats in restoration sites in high risk regions around the country.