Rhododendrons & Azaleas, Grafted or Not

Rhododendron and azalea are confirmed hosts of Phytophthora ramorum, the pathogen responsible for sudden oak death and ramorum blight. USDA APHIS and state departments of agriculture monitor nursery stock of these genera closely; shipments from affected regions may require additional testing, treatment, or certification to demonstrate freedom from the pathogen before entry.

No — all azaleas and rhododendrons, whether grafted specialty cultivars from Japan or standard nursery stock from Canada, are classified under the same 10-digit line (0602300000). The distinction between grafted and ungrafted is noted in the heading description but does not create separate tariff lines at the US 10-digit level.