Understock Source

(1) Understock for Malus or Pyrus spp. certified as virus-free must be produced from seed of registered parent trees and approved by the Department. Prunus spp. offered for certification as Premium Prunus spp. will be produced on seedlings grown from certified virus-free seeds. Prunus spp. offered for certification as Standard Prunus spp. may be produced on seedlings grown from seeds approved by the Department. (2) Seeds or seedlings which are transported must arrive adequately labeled inside and outside of parcel to insure identification in transit. Seeds or seedlings must be shipped in an individual parcel. Parcels MALUS/PYRUS/PRUNUS VIRUS-FREE CERTIFICATION CHAPTER 0080-6-17 must remain unopened until an authorized representative of the Department is present. Understock must be stored in an approved manner to prevent contamination.