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CO: Cast on
Create the first row of stitches on the needle. Cast on and bind off bracket your work. They set the stitch count at the start and fix it at the end.
How to work CO
Create the first row of stitches on the needle. Common methods are long-tail, knitted and cable cast-on. Your pattern may say which one to use.
Common mistake
Casting on too tightly, which makes the edge pucker; use a needle one or two sizes larger.
Effect on your stitch count
It does not change the stitch count by itself.
Related abbreviations
All terms are in the knitting abbreviations list, and in the app's Glossary, which works offline.
Frequently asked questions
What does CO stand for?
CO stands for cast on.
Does CO change the number of stitches?
It does not change the stitch count by itself.