A granny square mosaic crochet pattern combines the classic granny square structure with mosaic colorwork techniques, creating stunning geometric designs using only one color per row. This approach lets you achieve the look of complex color changes without ever carrying multiple yarn strands. Tip: always read your mosaic chart from right to left on right side rows and left to right on wrong side rows for the best results.
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Tip: Start with a two color mosaic chart before attempting multi color designs: mastering the basics first will make every project easier.
10 Free Granny Square Mosaic Crochet Patterns
Mosaic charts are easier to follow with stitch markers flagging your color change rows as you go.
1. Mosaic Crochet Brick Square
Nicole Riley designed this brick mosaic square for the MooglyCAL afghan (block 19), and it finishes 12 by 12 inches once blocked. The gauge is 3 stitches and 3 rows per inch in worsted weight, and it needs simple stitches only: single crochet, double crochet and back loop only stitches. An ad-free PDF is sold separately.
Free pattern: View the pattern.
2. Mosaic Granny Square
Erin Toews loves interesting stitches, and this square mixes an essential granny stitch with overlay mosaic. It is 12 by 12 inches on a 5 mm hook, with about 60 yards of the second color, and the gauge is rounds 1 to 8 making a 4 inch square, measured on the wrong side. She suggests blocking, and the pattern is free with a printable PDF sold too.
Free pattern: View the pattern.
3. Pink Lemonade Mosaic Granny Square
Ashley Parker says this is an easy way to try overlay mosaic without committing to a whole blanket. It comes in a 6 inch and a 12 inch size, the page has a colorwork chart and tips and tricks, and an FAQ that explains overlay mosaic: it uses single and double crochets to make graphic patterns.
Free pattern: View the pattern.
4. Mosaic Crochet Heart Granny Square
Erin’s heart square starts at the center with a mosaic heart, then adds rounds of granny stitch around it, and she rates it Easy. It is worked in worsted weight, about 80 yards each of pink and cream, on a 5 mm hook, and finishes 12 by 12 inches. If you are off gauge, she says to change the hook or add or subtract rounds to reach the 12 inch size.
Free pattern: View the pattern.
5. Mosaic Granny Square (Simple and Easy)
This is a two color mosaic granny square in front post double crochet, from a designer who suggests using it for a tablemat, placemat or cushion cover, or joining many squares. It works up quickly with leftover wool, and there is a video tutorial.
Free pattern: View the pattern.
6. Ribbon Mosaic Granny Square
Tonya Bush’s ribbon mosaic is a 12 inch square and a good introduction to mosaic crochet. The texture comes from working single crochets in the back loop only, then two rounds later working elongated double crochets into the front loops of those stitches. She used Red Heart Super Saver and recommends wet blocking the square.
Free pattern: View the pattern.
7. Classic Mosaic Granny Square
Glenda Winkleman’s Mosaic Granny Square appears as Creative Grandma’s Stitch of the Week #91, with a downloadable pattern. It is a good pick if you want a classic mosaic square with a printable file.
Free pattern: View the pattern.
8. Mosaic Granny Square (Video Tutorial)
Yarnhild calls the mosaic granny square a highly textured, stunning alternative to the traditional granny square, and says it is relatively easy even for beginners, even though it looks complicated. The video tutorial is in English and German, and it is a full video walkthrough, not a written chart.
Free pattern: View the pattern.
9. Overlay Mosaic Blanket Strip
Agat designed this diamond mosaic for the Mosaic in a Month CAL, as a blanket strip 50 inches wide and 6 inches high, which can be made taller. One repeat is 11.5 inches wide, the gauge is 9 stitches and 17 rows in 4 inches on a 5 mm hook, and you cut the yarn at the end of each row. It uses only two stitches: single crochet in the back loop, and a dropped double crochet in the front loop two rows below. It comes with both written instructions and a chart.
Free pattern: View the pattern.
10. Overlay Mosaic Technique Swatch
Sarah-Jayne Fragola’s page is a stitch tutorial, not a project: a free chart and a tutorial that explain overlay mosaic, where you only work one color per row, which reduces the need for frequent yarn changes. It is written for learning the technique, so it is the place to start before a full blanket.
Free pattern: View the pattern.