Cluster Stitch
several partially worked stitches joined at the top into one bump of texture
A cluster groups several stitches (commonly 3 to 5 double crochets) into one stitch by working each one only partway, then pulling the yarn through all the remaining loops at once. The result is a raised bump that sits on top of the fabric, used across shell patterns, textured blankets, and as the basis for many "bobble" and "popcorn" variations. Exact stitch count and base stitch vary by pattern, so always check the pattern's own instructions for a cluster before assuming it matches another one you've made.
There's no US/UK split on the term itself. "Cluster (cl)" is used the same way in both systems, though the individual stitches that make up the cluster (double crochet vs treble crochet, for example) still follow the standard US/UK naming shift.
How to work it
- Yarn over and insert your hook into the stitch or space the pattern specifies.
- Yarn over and pull up a loop, then yarn over and pull through 2 loops only, leaving 2 loops on your hook. This is one incomplete double crochet.
- Repeat step 1 and 2 in the same stitch (or across the stitches the pattern names) for the number of incomplete stitches the cluster calls for, without finishing any of them off.
- Yarn over one final time and pull through all the remaining loops on your hook at once. This closes the cluster into a single unit.
- Chain 1 to secure the top of the cluster if the pattern calls for it, then continue to the next stitch.
When to use it
Use clusters for raised, dimensional texture: shell and fan stitch patterns, textured blankets, and as an accent within otherwise plain fabric. Because clusters pull several stitches together at the top, they draw fabric in slightly, so swatch first if width or stitch count needs to stay exact.