Yes — USDA APHIS requires a phytosanitary certificate from the national plant protection organization of the exporting country for virtually all bulbs and planting material. Certain species also require an APHIS import permit, and some origins face additional pest-risk conditions or treatment requirements.

Heading 0601 covers both states: dormant bulbs, corms, and rhizomes fall under 060110, while the same material that is actively growing or in flower at the time of export is classified under 060120. The distinction matters because phytosanitary risk profiles and seasonal trade patterns differ between the two conditions.