Iris ‘Orinoco Flow’ is a distinguished Border Bearded (BB) iris cultivar introduced by hybridizer Cy Bartlett in 1989. This variety stands at approximately 25 inches (64 cm) tall and is celebrated for its extended blooming period, flowering from early to late season. The blossoms feature a white ground with heavily stitched deep purple-blue edges on the standards, while the falls display prominent plicata markings at the hafts and top edges. A notable characteristic is its navy blue beard and a slight sweet fragrance, enhancing its appeal in gardens. ‘Orinoco Flow’ has been recognized for its exceptional qualities, receiving the prestigious British Dykes Medal in 1994.
In terms of cultivation, this iris thrives in full sun to partial shade and prefers well-drained soil. It’s suitable for various soil pH levels, ranging from slightly acidic to slightly alkaline. Gardeners appreciate its vigorous growth habit and the ability to produce up to six flowers per stem, making it a striking addition to borders and perennial beds.
For optimal growth, it’s recommended to plant ‘Orinoco Flow’ rhizomes in a location with good air circulation to prevent moisture-related issues. Regular fertilization in early spring and after blooming can promote healthy growth and abundant flowering. Dividing the clumps every few years will help maintain plant vigor and flower quality.
Overall, Iris ‘Orinoco Flow’ combines aesthetic beauty with robust performance, making it a favored choice among iris enthusiasts and gardeners seeking a reliable and visually appealing addition to their landscapes.
American Iris Society Registration Data
- Description – S. white ground, heavily stitched deep purple blue on edge; deep blue purple styles; F. white ground, heavy plicata markings at hafts and top edge; navy blue beard; heavily ruffled; slight sweet fragrance
- Hybridizer & Year of Introduction – Cy Bartlett, 1993
- Classification – Border Bearded
- Bloom Period – Early midseason through late
- Bloom Height – 25″