Official Grain Grading Guide
Canary seed: Classes, types and varieties
Types
There are two main types of canary seed, itchy and hairless.
Itchy
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Itchy type canary seed
The term refers to varieties which have tiny, sharp hairs (spicules) attached to the hull.
Hairless
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Hairless (glabrous) type canary seed
The term refers to varieties which don’t have tiny hairs (spicules) attached to the hull. These varieties are commonly referred to as glabrous.