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How do you join new colors in single crochet?

Single crochet is one of the most basic crochet stitches and is often used for beginner crochet projects. When working in single crochet, you may want to change yarn colors to create stripes, color blocks, or other colorwork patterns. Joining a new color yarn in single crochet is easy to do, but there are a few techniques to keep in mind for a clean color change. In this article, we’ll look at when and why you might want to join a new color in single crochet, the basic techniques for joining yarn, and some tips for minimizing gaps or holes when changing colors.

When to Join a New Color in Single Crochet

There are a few instances when you will need to join a new yarn color in your single crochet project:

  • At the beginning of a new row to create horizontal stripes or color blocks
  • At the end of a row to begin a new color on the following row
  • In the middle of a row to change colors within a row

Joining a new color yarn allows you to create colorful patterns, motifs, geometric designs, and other creative effects in your single crochet fabric. It’s a great technique for using up yarn scraps or playing with different color combinations in your work.

Basic Techniques for Joining Yarn

When you need to join a new color in single crochet, there are two main methods:

Method 1: Join New Yarn at the End of a Row

  1. Work the row in the old color to the last stitch.
  2. Make your final single crochet stitch with the old color.
  3. Drop the old color yarn, then pick up the new color yarn.
  4. Make a slip knot in the new color and place it on your hook.
  5. Pull the new yarn through the last loop on your hook to join.
  6. Tighten the new yarn and continue crocheting in the new color.

This method lets you cleanly join a new color right at the edge before beginning a new row. It’s useful when you want solid stripes or color blocks in your work.

Method 2: Join New Yarn in Middle of Row

  1. Work up to where you want to change colors.
  2. With the old color, make a single crochet stitch but do not complete it. Yarn over and pull through just the first two loops on your hook.
  3. Drop the old yarn and pick up the new color.
  4. Place a slip knot of the new yarn onto your hook.
  5. Finish completing the single crochet by pulling the new yarn through the two loops left on your hook.
  6. Continue crocheting with the new color to finish the row.

This technique allows you to switch colors mid-row for motifs, colorwork, stripes, or repeating patterns. The unfinished single crochet stitch secures the new yarn in place for a clean join.

Tips for Smooth Color Changes

When joining new colors in single crochet, focus on the following tips to help make clean color changes:

  • Maintain even tension. Try to crochet with the same consistent tension in both the old and new colors. Drastic tension changes can cause gaps or holes at color joints.
  • Watch your stitch height. Work stitches to the same height in both yarn colors to prevent gaps or uneven edges.
  • Weave in ends as you go. Take a moment to weave in the tail end of the old yarn and the beginning of the new yarn as you join colors. This secures the yarns and helps minimize holes.
  • Plan colors in advance. Think about where you want color changes to occur and plan how much yarn you’ll need of each color. Try not to join new yarns mid-row or mid-stitch.
  • Join new yarn under old yarn. When starting a new color, lay the new yarn under the strand of the old color to twist them together and close any gaps.

Planning your color joins carefully and working for even tension and stitch heights will give you the best results. Take it slow at color change points and weave in ends to secure the yarns. With a bit of practice, your single crochet colorwork will look clean, cohesive, and professional.

Step-By-Step Tutorial

If you are new to joining yarn colors in crochet, it can help to follow a step-by-step tutorial. Let’s look at how to cleanly join a new color yarn in single crochet:

Supplies Needed:

  • Crochet hook size H/5.00mm
  • 2 colors of worsted weight yarn (example: Color A and Color B)
  • Yarn needle for weaving in ends


  1. Create a foundation chain with Color A. (Example: Chain 20)
  2. In row 1, work single crochet stitches across the chain using Color A. (Example: 20 single crochet stitches)
  3. In row 2, work in single crochet up to the last 2 stitches using Color A. (Example: Single crochet in 18 stitches)
  4. Make a single crochet stitch in the next stitch but do not complete it – yarn over and pull through only 2 loops. Drop Color A.
  5. Pick up Color B and make a slip knot. Place it on your hook.
  6. Finish the incomplete single crochet by pulling Color B through the remaining 2 loops.
  7. Make 1 single crochet in the last stitch using Color B.
  8. For row 3, continue crocheting in single crochet using Color B.
  9. Fasten off Color B at the end of row 3 and join Color A to begin row 4.
  10. Repeat the color change process as many times as needed for your desired pattern.

Remember to maintain even tension as you join new colors for the best results. Take it slowly and work the stitches in each color to the same height. Keeping the edges tidy will create a professional crisp finish.

Sample Patterns and Designs

Joining new yarn colors opens up many creative possibilities for patterns and designs in your single crochet projects. Here are just a few ideas to spark your inspiration:

Simple Striped Pattern

  • Rows 1-4: Color A
  • Rows 5-8: Color B
  • Repeat sequence

This basic stripe sequence livens up any single crochet project. Join new yarns at the start of rows.

Checkerboard Pattern

Row 1: A B A B A B
Row 2: B A B A B A

Create checkerboards by joining new colors every 2 stitches. Repeat the 2-row sequence.

Mosaic Crochet Pattern

Example of mosaic crochet pattern using color changes

Mosaic techniques involve changing colors mid-row for beautiful geometric effects. Get creative!

Gradient Sunset Pattern

Example of sunset gradient color pattern in crochet

Gradating between colors is easy by joining new shades every few rows. Mimic natural color blending.

Common Problems and Solutions

When changing colors in single crochet, watch out for these potential issues:

Problem Solution
Gaps or holes where colors meet Maintain even tension. Weave yarn ends in as you join. Draw new yarn tight.
New color looks loose or oversized Work new color with same gauge. Check stitch height.
Edges look jagged at color change Work final stitches of old color loosely. Join new yarn under old.
Too many ends to weave in Plan color joins in advance. Join new colors at edges when possible.

Taking care at color change points will prevent most issues. Adjusting your tension, checking stitch size, and securing ends neatly gives the best outcome.

Creative Possibilities

Joining new yarn opens up many creative possibilities with single crochet. Here are some ideas to try:

  • Play with different color combinations – contrasting, complementary, triadic, analogous, and more.
  • Create ombre or gradient color effects.
  • Use variegated or self-striping yarns for colorful results.
  • Mix different textured yarns like wool, cotton, linen, silk.
  • Design color block blankets, pillow covers, apparel or accessories.
  • Make geometric motifs and patchwork patterns.
  • Add whimsical shapes, dots, and squiggles.
  • Layer different colors and shapes to form three-dimensional textures.

Switching colors in single crochet opens up an endless variety of options. Let your imagination run wild!

How to Finish and Seam Projects

Once your project is complete, you’ll need to finish it off cleanly and seam pieces together if needed. Here are some tips:

Finishing Rows and Edges

  • Avoid color changes on the final rows to prevent unfinished edges.
  • Work a few rows in one color for borders. Consider a complimentary color.
  • For straight edges, work a row of slip stitch or crab stitch edging.
  • For rippled edges, work several rows of crab or reverse single crochet.

Neat edges give a polished, professional look to your project.

Seaming and Assembling Pieces

  • Use the mattress stitch to neatly join crochet pieces edge-to-edge.
  • For assembling motifs, use the whipstitch or backstitch.
  • Match and orient pieces carefully before seaming for best results.
  • Take time to weave in all ends securely along seams and borders.

Proper finishing and seaming helps show off your beautiful colorwork.


Joining new yarn colors in single crochet opens up amazing possibilities for creative projects. With some careful planning and practice, you can master clean color changes and take your crochet to the next level. Pay attention to tension, stitch height, and securing ends for flawless results. Before you know it, you’ll be fashioning stunning stripes, motifs, checkerboards, and color block patterns as you join colors with ease. So grab your hook and a rainbow of yarns – it’s time to make something beautiful!