Intermediate Bearded Iris 'Protocol': Precision in Bloom

Exacting in form and reliable in performance, 'Protocol' is an Intermediate Bearded iris cultivar that follows the highest standards of garden merit. Hybridized by Keppel and registered in 1994, this variety brings disciplined beauty to the mid-border.

Visual Standards

Registration Details

'Protocol' reaches the typical IB height of 16-27 inches, forming neat clumps of blue-green foliage. The blooms exhibit precise form—well-proportioned standards and falls with clean lines and consistent color. This mid-season bloomer (for IB class) provides a reliable bridge between dwarf and tall bearded iris seasons.

Cultural needs: full sun, excellent drainage, neutral to slightly alkaline soil. Plant rhizomes at surface level, spacing 10-12 inches. Water regularly during growth. Fertilize lightly in spring. Divide every 3-4 years in late summer. 'Protocol' establishes a standard of excellence for the intermediate border.