How To Crochet The Interlocking Block Stitch

The Interlocking Block Crochet Stitch

This stitch creates a staggered check pattern which creates a beautiful effect for an endless choice of projects.

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I first used the Interlocking Block stitch during my 50 Stitches crochet along. I went and used 4 different yarn colours in that square, which although it left me with a lot of ends to weave in, it did produce a very unique striped block look – see the picture below.

The number of colours you choose to use for this stitch will change the final look, but traditionally the Interlocking Block stitch is made with 3 different colours that are switched at the end of every row.

The Interlocking Block Square

This how to guide is part of Froggity Frog’s Stitch Vault collection. Have you seen all the other stitches in there? You can take a look here all the guides are free to access and maybe you will discover some new stitches to create for yourself.

The Interlocking Block stitch has a flat texture and is made by staggering rows of chains and double crochet stitches to create this fabulous look. This stitch would look great used in a huge variety of projects such as blankets, scarves, clothing and more.

The yarn I used in this stitch guide is Stylecraft Cotton Classique DK, a 100% cotton yarn. It’s a non mercerised cotton that is lovely and soft, but it can get a bit splitty if you frog it a couple of times. It does makes lovely cosy blankets though and is the yarn that got me hooked on cotton as my fibre of choice. I think I first got a ball of this yarn in a mystery bag I got off ebay, and it was a great yarn discovery for me.

I also used my trusty Clover Amour hooks which are perfect if you are looking for a good value ergonomic crochet hook that won’t cause your hand to ache if you are crocheting for long periods of time. I’ve tried many different crochet hooks over the years, but I always end up coming back to my trusty Clovers. They just sit so well in my hand and never let me down.

The Interlocking Block Stitch

The Interlocking Block crochet stitch guide below is written in US terms.

Abbreviations

  • Ch = Chain
  • St = Stitch
  • Sc = Single Crochet
  • Dc = Double Crochet

Start with a foundation chain in multiples of 3 plus 2 for your turning chain

If you are using 3 colours, then you don’t cut off your yarn at the end of the row. Instead you carry it up the side, to be picked up 3 rows later. A nice trick to cut down the number of ends you need to weave in.

Row 1. In the 4th chain from hook make a dc (the turning chain counts as your first stitch of the row). Make a dc in the next stitch, then *chain 3 and skip the next 3 stitches. Make a dc in each of the next 3 stitches*

The interlocking Block Row 1
Repeat between *and*. When you get to the last 3 stitches make a chain 2, sk the next 2 stitches and make a sc in the last stitch, but change colour when pulling through the 2 loops like in the picture below.
Joining your 3rd colour

Row 2. Turn and chain 1. In the same stitch as the colour change, make a dc turning chain. Now you’re going to be working into the 2 skipped chains in the foundation chain. Make a dc in each of the 3 skipped chains like in the picture below.

It does help if you pull up that first loop of your double crochet stitch a little higher than usual, so that it doesn’t squish the chain down too much. This will also help to maintain the height of each of your rows.

*Chain 3. Skip to the next set of skipped foundation chains and make a dc in each of the 3 chains*

Interlocking Block, pull up loop to the height of the other stitches
Repeat between *and*. When you get to the last 3 stitches of the row, chain 2 and skip the next 2 stitches. Make a sc in the last st, changing colour in that stitch also.

Row 3. In the same stitch as the colour change, make a dc turning chain. In the 2 skipped chains 2 rows below, make a dc. *Chain 3. Make a dc in each of the next skipped stitches 2 rows below* 

Interlocking Block make stitches in skipped ones in the row below
repeat between *and* when you get to the last 3 stitches, chain 2 and skip the next 2 stitches. Make a sc in the last st, changing colour in that stitch also.

Repeat row 3 until you have made the number of rows you need. Then we need to make a finishing row so that you don’t have any empty chains on the top of your crochet piece.

Finishing row. Chain 1 and make a sc in the same stitch as the colour change. Make a sc every stitch across, and in the skipped stitches of the row below make a sc in each – but be sure to pull the first loop of your sc stitch up so that it is the same height as the rest of your stitches. Make sc like this all the way across the row.

Once you get to the end, make a sc in the last stitch then cut off and weave in your ends. Then you have completed your Interlocking Block stitch piece.

You can find more free crochet stitch guides here in Froggity Frog’s stitch vault. Come on over to our Facebook group – Froggity Frog’s Ribbit And Stitch and show us what you made with the Interlocking Block stitch. I’d love to see what you created. 

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