How to Crochet a Straight Edge Around Joined Granny Squares

How to Crochet a Straight Edge Around Joined Granny Squares: The Complete Guide

Nothing elevates a handmade blanket or pillow quite like a set of perfect, joined granny squares with a straight, flat border. As someone who spends a lot of time with yarn in hand, I know the joy in transforming wobbly edges into clean lines that make your project look professional and polished. Today, I’m walking through each step to help you get just that—a crisp, even edge around your joined granny squares, all inspired by a favorite tutorial from The Secret Yarnery.

Overview of the Tutorial

When working with joined granny squares, one of the main challenges is making the border look straight and tidy, instead of bumpy or uneven. Getting the right stitch count around your joins is key for a neat finish, and even tiny differences can mean ripples or dips at the edges. In this step-by-step guide, I'll share the same straightforward approach Krista from The Secret Yarnery uses—making it easy to follow and hard to mess up.

Materials Needed

Here’s what I keep handy for a seamless edge:

• Crochet hook that matches my chosen yarn.
• Same yarn used for joining or one that complements the whole project.
• Darning needle for sewing in tails.
• Stitch markers if I want to keep track of joins and corners. I always leave long tails at the start and end, so it’s easier to sew them in later.

Preparing Your Joined Granny Squares for the Border

First up, pick a corner to start your new border. Before doing anything, take a moment to notice how you handled chains and shells in your original granny squares. If you worked without chains between shells before, do the same now. Stay consistent by matching the chains and shells—this makes everything line up smoothly.

Starting the Border at the Corner

Here’s my tried-and-true way to begin:

1. Insert your hook into a corner space of your joined granny squares.
2. Fold a loop of yarn over your hook, leaving a tail that’s long enough to sew in later.
3. Pull that loop through and slip stitch using both strands to join. For the first few stitches, hold the tail along your work and crochet over it. This tucks it in neatly and saves you work later.

Beginning the Granny Shell Border Row

Now for the base stitches:

• After the slip stitch join, the slip stitch counts as chain 1.
• Chain two more. Chain 2 counts as your first double crochet for the row.
• Into that same corner space, work two more double crochets. That’s three stitches total in the corner, which is your first granny shell.

Working Along the Side: Shell Placement and Stitch Count

To get that signature granny pattern, just keep going:

1. Skip straight to the next space (no chain between, unless your squares use chains).
2. Work three double crochets into each open space down the side.
3. Keep an eye on your pattern—consistency keeps things flat. I work all the way down the side, stopping right before I hit the join between squares.

Handling the Join Between Granny Squares - The Basics

Where two granny squares are joined, you’ll find a space on each side of the join. Left unchecked, this area can look bulky or uneven. The fix is simple: merge the two spaces by creating a single shell that covers both. This flattens the join and keeps your edge perfectly straight.

How to Crochet the Joined Shell: Step-by-Step Breakdown

Here’s how I handle those pesky joins:

• Place one double crochet in the first space before the join.
• Begin a second double crochet in that same space—yarn over, insert, pull up, yarn over and pull through two loops—but stop there with two loops still on the hook.
• In the space on the other side of the join, start another double crochet up to the last yarn-over, so you now have three loops on the hook.
• Yarn over and pull through all three loops at once (this decreases the two partial double crochets together).
• Finish with one more double crochet in the second space. So, the join is: double crochet, double crochet decrease, double crochet.

Visualizing the Joined Shell

This method forms a joined shell at the top of the join, where three stitches sit nice and even on the edge—just like anywhere else along the side. That means, for every round that follows, you will treat this section as a single shell. If you need a closer look, the video above shows each step clearly.

Continuing Along After the Join

After working the joined shell, it’s right back to normal:

• Three double crochets in every open space all the way along.
• Maintain a steady pattern to keep the edge flat.
• Pay attention at each join and give it the decrease treatment each time.

Repeating the Joined Shell Technique at the Next Join

Use the same method at every join:

• Double crochet in the space before.
• Double crochet decrease spanning both spaces.
• Double crochet in the space after. Repeating this strategy at each join builds a strong, flat edge with no unwanted bulges or gaps.

Working the Corners of the Border

Corners need a little attention for the classic granny look:

• Three double crochets in the corner space.
• Chain the same number you used inside your original granny squares’ corner (commonly chain three).
• Three more double crochets in the same space. Stick with your original chain count for cohesion across the whole project.

Turning at the Corner

When you finish one side and hit a corner, turn your work slightly to head down the next edge. This makes stitching more comfortable and helps keep your stitch counts lining up all around. Keeping things consistent as you turn ensures a perfectly shaped border without surprises.

Continuing Along Subsequent Sides

On each new side, the pattern continues:

• Work three double crochets into every open space.
• Use the decrease method at every join.
• Try to keep your tension even and shells snug, so the entire border stays flat and tidy.

Finishing the Final Join and Last Corner

As you near the beginning again:

• In the last corner space, complete three double crochets and the same corner chain as before.
• Slip stitch to the top of your beginning chains to close the round.
• Make sure chain counts at corners match your original work. This keeps the square square, and the edges dead straight.

Closing the Round: Joining and Securing Yarn

Here’s how I finish strong:

• After the final slip stitch, you can use an invisible join for the neatest look.
• Secure your yarn with a chain one.
• Cut your yarn, leaving another long tail for sewing.
• Pull your hook out, tug the yarn through, and tug down to tighten. It’s a quick step that makes a big difference in the finished edge.

How the Edge Looks After the First Border Round

Once you finish the round, you may notice slight dips at the joins—this is totally normal. With each new border round, those dips will pull up and disappear, leaving a lovely, flat frame for your joined granny squares. Take a step back and check your work; minor dips will even out with the next round.

Working Additional Border Rounds Over the Joined Edge

As you add more border rounds, treat the area before and after each joined shell as the new border spaces. This helps the new round blend smoothly into the previous one, creating a straight line that hides all those joins. Even if things looked bumpy at first, the new layers will settle and even out beautifully.

Adjusting the Border if Your Original Granny Squares Include Chains Between Shells

If your granny squares had a chain one between each shell, just keep the same pattern around your border. Add a chain one between each shell in the border round. This keeps the spacing and look consistent, and makes your finished piece cohesive.

Stitch Counts to Watch For in the Border

Consistency is critical:

• Sides: Each open space should host three double crochets.
• Joins: Handle each join with one double, a decrease, then another double.
• Corners: Three doubles, corner chains that match your original pattern, then three more doubles. Count your stitches after your first side and early on in the round. If you see gaps, ripples, or waves, double check if you missed a shell or an extra chain.

Extra Tips for Maintaining an Even Tension

Uneven tension can cause wavy edges or lumpy borders. I find that holding yarn the same way for every stitch, and not tugging too hard, keeps things even. If your edges are curling or waving, try loosening your grip or sizing up your hook for the border. Practice makes perfect and tension will feel natural over time.

Troubleshooting Common Issues with Joined Granny Square Borders

Even seasoned crocheters run into hiccups.

• Wavy Edges: Usually from too many stitches—recount your shells per space.
• Gaps at Joins: Double check you worked the decrease properly over the join.
• Uneven Shells: Make sure all your double crochets reach the same height and that you match your tension throughout. If you spot a mistake, just pull back to that stitch, fix it, and move on. Patience, not speed, guarantees the straightest edge.

Finishing Your Project: Weaving in Ends

I always leave a long tail wherever I join new yarn or finish a round—it’s invaluable for weaving in. A darning needle (or a needle threader for thicker yarns) slides through stitches, making it easier to lock tails in place. I bury ends along the seams or under stitches, making sure there are no bulky knots to feel or see.

How to Share Your Work With the Community

I love seeing what others make with their granny squares, and sharing mine gives me ideas, too. If you haven’t done it yet, join our community on Facebook—The Secret Yarnery Crochet Community. It’s a perfect place to upload photos, ask questions, cheer on others, and get inspired with new project ideas.

Additional Resources and Tutorials from The Secret Yarnery

Left-handed or right-handed, there’s a tutorial for you. Find all left-handed crochet tutorials on The Secret Yarnery, or revisit the right-handed version of this straight edge tutorial. Don’t forget to grab your free crochet cheat sheet loaded with quick references, stitch info, and more tips.

Recommended Crochet Tools for Your Projects

Keeping reliable tools on hand helps your crocheting go smoothly:

• Crochet hooks: A comfy grip makes longer sessions easier.
• Blunt needles: Best for weaving ends without splitting yarn.
• Sharp scissors: Clean cuts avoid ragged yarn.
• Stitch markers: Marking joins and corners helps avoid mistakes.
• Measuring tape: Helpful for making sure your border is even all around. I love these needle threaders and blunt needles for smooth finishing and yarn ball storage bags for organizing work-in-progress projects.

Summary of Stitch Abbreviations Used

Here’s a quick glossary that comes in handy, especially for beginners:

• sl st: Slip stitch
• ch: Chain
• dc: Double crochet
• shell: Group of three double crochets in one space
• dc2tog: Double crochet two together (decrease)

Understanding the Importance of Border Consistency

Keeping your shells and chains the same in the border as they are in your granny squares is like matching puzzle pieces. If you change patterns at the edge, things get uneven fast. With consistency, your work looks neat and professional, no matter how big your project gets.

Alternative Join Methods Overview

You aren’t locked into one join style. Some crocheters use flat braid join techniques, whip stitch, or crochet slip stitch joins. Each method has its own texture and look. I suggest trying out a few to see which gives you the finish you like best.

How to Modify Chains in Corners for Different Border Effects

Adjusting chain length in the corners (using chain two or three) can totally change the look or flexibility of your border. Fewer chains make corners tighter and more squared, while more chains give a looser, more decorative look. Test different counts on scrap squares to see what matches your style.

Explaining the Decrease Technique at the Join

The double crochet decrease across the join makes the transition smooth by avoiding lumps or holes at the connection. Each partial double crochet leaves some loops on the hook; drawing through all at the end links the spaces tightly together. This little trick turns two spaces into one solid shell, creating straight lines every time.

Step-by-Step Join Recap for Reference

Here’s my quick checklist for working over a join:

• One double crochet in the space before.
• Partial double crochet in same space.
• Partial double crochet in next space.
• Yarn over and pull through all loops.
• Finish with a double crochet in the second space. Use this summary to stay on track without having to rewind the video.

Using Color and Yarn Weight to Enhance Joined Granny Square Borders

Borders can pop or blend depending on color choices. A contrasting border makes the joined granny squares stand out, while a matching one gives a seamless look. Yarn weight matters, too—thicker yarn creates bolder, stiffer borders; lighter yarns feel softer and drape more. Experiment with color combos and weights to make your project unique.

Handling Different Sizes of Granny Squares in Joins

If your joined granny squares aren’t the same size, adjust by sneaking in an extra double crochet or chain in the smaller block’s border. You may also use a slightly larger hook for smaller squares to even up the edges. Careful counting and slight adjustments keep the overall border looking straight.

Importance of Long Tails for Seamless Finishing

Leaving long tails makes weaving in ends much easier, especially at joins or corners. They allow you to secure stitches along seams, avoiding loose threads that can unravel. A neat finish with invisible tails keeps your project looking professional and lasting longer.

Visual and Textual Learning: Benefits of Pairing Video and Written Tutorials

Watching Christa's clear step-by-step video as you crochet, while referring back to written notes, is the fastest way to learn. The video lets you see hand and hook placement, while this guide breaks down the steps in plain English. Pause during tricky parts, repeat as needed, and you’ll master each technique quickly.

Encouraging Practice Through Small Projects

Starting small helps you gain confidence in your border techniques. I like using leftover yarn for test squares—turn them into coasters, a mini blanket, or a cover for a throw pillow. The more you repeat the join border steps, the faster and cleaner your hands will get.

Keeping Your Crochet Hook and Yarn Handy

No more losing your favorite hook in the couch! I stash mine in a reliable yarn ball storage bag or zipper pouch. Having everything close by means you can just grab and go without searching for supplies in the middle of a project.

Maintaining Your Craft Space for Focused Crochet Sessions

A cozy, well-lit spot for crochet makes every project more enjoyable. Fewer distractions mean fewer missed stitches or uneven shells. Set up a lamp, clear some table space, and settle in—it’s worth the small effort for big results.

Using Stitch Markers to Mark Joins and Corners

Stitch markers come in handy for marking corners and joins, ensuring you never lose your place. I use removable markers (or even safety pins) to keep track of important spots, especially when working rounds on a large blanket.

Slow and Steady Wins the Race: Taking Time with Border Joins

Crochet isn’t a race, and quality counts more than speed. Especially when working decreases at joins, take your time—each stitch counts toward a straight-looking edge. If you rush, it’s easy to miss a decrease or twist a stitch, so slow down and enjoy the process.

Understanding Chain 1 vs Chain 3 Corners in Granny Square Borders

A chain one corner makes your border tight and square, which is great for sturdy items. Chain three in the corner gives more space and makes drapier, softer edges—perfect for blankets. Match the chain number to your original granny squares or the effect you want.

Common Mistakes to Avoid When Joining Granny Squares with Borders

Mistakes can sneak in, but they’re easy to catch if you know where to look:

• Skipping a loop or space at a join.
• Adding extra stitches along the border.
• Forgetting to decrease at joins. Check your work every few shells to catch problems early. A quick fix saves time later.

How to Transition from Border to Final Edging or Finish

Once your straight border is finished, add a decorative edge like a picot, shell, or scallop for an eye-catching finish. There are countless options—you can find some beautiful border technique ideas that work great atop joined granny squares.

Inviting Readers to Subscribe and Join the Community

Be sure to subscribe to The Secret Yarnery on YouTube for new tips, weekly Q&A, and crochet-along chats. Our Facebook group is the perfect spot to show off your projects, swap advice, and meet others who love yarn as much as you do.

FAQs

• How do I keep the border from going wavy?

Recount shells. Waves usually mean too many stitches. Make sure you place only one shell in each space, and work the dc2tog across each join. If it still ripples, try a larger hook for the border round.

• Why do I see dips at the joins after the first round?

That’s normal. The dc2tog flattens the join, but the first round can show slight dips. They even out after the second and third border rounds.

• Do I need chains between shells on the border?

Match your original squares. If your squares have a chain 1 between shells, add chain 1 between border shells. If not, skip chains for a tighter edge.

• What should I do in the corners?

Work 3 dc, chain the same number used in your original square corners (often ch-3), then 3 dc in the same space. Consistency keeps the border square.

• How do I handle the space where two squares meet?

Use the joined shell: dc in the space before the join, dc2tog across both spaces, dc in the next space. Treat that as one shell in future rounds.

I’m Christa, the yarn lover behind this guide. I’m a lifelong crocheter, a granny-square superfan, and the voice behind The Secret Yarnery community features on my blog. I design simple, cozy projects that look polished without being fussy, and I’m all about clear steps you can follow without guesswork.

When I’m not joining squares or filming tutorials, you’ll find me testing new borders, answering questions in crochet groups, and cheering on makers who are learning something new. I believe in friendly instruction, practical tips, and projects that make you smile.

Want more tutorials, printables, and free cheat sheets? Visit secretyarnery.com, subscribe on YouTube, and come hang out with us in The Secret Yarnery Crochet Community on Facebook. Let’s make something beautiful, one stitch at a time.