Best Management Practices

Wild-collected plants may harbor pests or pathogens.  Many pests and diseases are not readily apparent and the plant may be asymptomatic.  Grow material out first in an isolated area to detect any disease.  When possible buy nursery stock domestically from an accredited source and visit the source nursery.  Self-propagation of new plants can prevent introduction of pests and pathogens.  Make sure the propagation areas are isolated and restricted to authorized personnel (97).   In some areas inspection by the USDA is required for wild-collected plants.

PR:  The symptoms of Phytophthora ramorum can be masked or take some time to appear.  Isolate incoming stock and leave it untreated long enough to determine if symptoms have been suppressed by previous treatments (72). When receiving high risk incoming stock, isolate it from the rest until it can be certain that it is without pest and disease, so nursery stock is not exposed.