A tiered verification system designed to differentiate between commodity nursery stock and the limited-edition specimens and grails of the Pacific Northwest.
Sourced directly from the current availability lists of our primary nursery partners. Verification relies on the long-standing regional reputation and internal quality control of the grower. Ideal for high-volume screening and foundational plantings.
Hand-selected by nursery principals for the Tree Supply Co. network. Each tree undergoes an in-person audit against the 10 Criteria of Tree Selection, verifying superior character, form, and visual impact before inclusion in the network.
Reserved for the finest of the Pacific Northwest — unique, long-lived, and monumental candidates for a living Catalog d'Raison. Buyers receive a dedicated Curatorial File including 360° high-fidelity video and drone photography prior to purchase.
Selection Criteria for Estate & Legacy Grades
Visible Flare: Root collar must be at or above soil line. Zero tolerance for buried trunks.
Self-Supporting: Specimens must remain vertical without nursery stakes or external support.
Clean Architecture: Rejection of co-dominant stems or structural "V" crotches susceptible to splitting.
Zero Trauma: No evidence of mower scars, trunk-girdling ties, or improper pruning stubs.
Balanced Canopy: Verified 360° structure. No flat sides from overcrowded nursery spacing.
Growth Habit: Natural, short internodes (dense growth) appropriate for the species.
Leader Integrity: For upright varieties, a single, dominant vertical leader is mandatory.
Pest Zero: Absence of boring holes, scale, or fungal cankers confirmed by in-person audit.
Root Cohesion: The root ball and trunk must move as a single unit without wiggle or looseness.
Species Purity: Verification that the specimen is true-to-type with no reverted foliage.