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Learn how to Crochet the By The Sea Blanket

Updated July 26, 2023
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The By The Sea Blanket is a quick and easy beginner friendly blanket. Whether you want to make a baby blanket or alternatively modify this blanket to make it bigger. This beginner friendly pattern is made up from just UK trebles, slips stitches and chains. You can also find the assisting video tutorials further down the post. Also in this blog I’ll also provide some colour inspiration and share all the pattern notes you’ll need before getting started.

Girl on a beach with a block stripe crochet blanket over her shoulders
By the Sea Blanket

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colour choices

With this blanket featuring a bold block stripe, it means you can get creative with colour and experiment with different yarn colour palettes to suit your mood or to suit the recipient if you are gifting the blanket. Whether you want to go for bold brights or alternately some light pastels, the choices are endless! Take a look at this blog if you need some colour inspiration the choosing your yarn for this project.

Girl on the beach holding a block stripe crochet blanket.

You can purchase a low cost ad free, printable copy of this pattern HERE. Not only does it mean you get your own copy of the pattern to print, you also support a small business and help me to keep making free patterns!

an online advert for a crochet patchwork blanket.
Crochet Patchwork Blanket

materials and tools

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pattern notes

  • Difficulty: Beginner
  • This blanket was designed to use 4 balls of Stylecraft special chunky, making it the perfect 4 ball project!
  • Gauge: 10cm x 10cm = 10 stitches x 6 rows
  • Completed Size: 67.5 cm (H) x 85 cm (W) approx

terms & abbreviations

  • Chain Space(ch-sp)
  • Slip Stitch (ss): Insert hook into space, yarn over and pull through stitch and loop on hook
  • Chain (ch): Yarn over, pull through one loop on hook.
  • Treble crochet (tr): Yarn over, insert hook into stitch, yarn over, pull up a loop, you will have three loops on the hook. Yarn over, pull through two loops, yarn over, pull through remaining two loops.

Not attempted treble crochet before? Check out the blog below for a step by step guide on how to treble crochet. If you prefer working in US terms, this is a US double crochet stitch.

EBOOK promotion for the Bella Coco How to Crochet - a Handy Reference Guide eBook.
How to Crochet – A Handy Reference Guide eBook

Unsure of the differences between UK and US terms? Need a refresher on how to do your stitches? In my ‘How to crochet: A handy reference guide’ EBook I help you with all of these terms and you can always have them to hand! You will also get exclusive access to free video instructions. You can find my EBook HERE.

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Crochet blanket on a wooden chair with a cushion that says 'Sandy toes & Salty Kisses' on it in the handwritten style.
By the Sea Blanket

by the sea blanket pattern

  • Using Colour A
  • Foundation: Ch 70 + 3 for turning.
  • Row 1: Tr in 4th ch from hook and each ch to end, then turn. (70 sts including turning ch here and throughout)
  • Row 2-12: Ch3 (counts as a tr here and throughout), tr in each st to end, then turn. (70 sts)
  • Fasten off Colour A and then attach Colour B
  • Row 13-24: Ch3, tr in each st to end, then turn. (70 sts)
  • Fasten off Colour B and then attach Colour C
  • Row 25-36: Ch3, tr in first st and each st to end, then turn. (70 sts)
  • Fasten off Colour C and then attach Colour D
  • Row 37-48: Ch3, tr in first st and each st to end, then turn. (70 sts)
  • Finally, fasten off and then sew in the ends. 
Girl holding a blanket on the beach featuring crocheted stripes
Take your beautiful By the Sea Blanket to the coast!

how to adapt

Alternatively, if you would like to make this blanket bigger, you just need to double (or treble or more) the length of the chain. You must then do the same with the rows. So for example, if you have doubled the amount of the chains, you would also double the amount of the rows.

assisting video tutorial: tips for keeping straight edge

Always find your blankets end up with wonky edges and don’t look too neat when you’re finished? I have an assisting video tutorial for you below where you can learn how to get that professional straight edge every time. There’s also a blog here full of tips and tricks on how to make sure your blankets end up with professional straight edges.

quick and easy blankets

Looking for more blanket projects? Blankets are a great mindful beginner make to get used to crochet stitches with the repetition of the rows. Here are a few from the blog to get your hook into…

If you’re looking for a project to work on gradually whilst learning new crochet stitches then the Patchwork Blanket might be the project you’re looking for. Crochet 30 stitches and construct this beautiful Patchwork Blanket following my 65 page Ebook. Click below to find out more or alternatively click the image below.

Patchwork Blanket

I always love to see your makes so if you try any of my patterns or follow my stitch tutorials please tag me @bellacococrochet or use the #bellacococrochet

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  • joanne james
    February 23, 2019 at 12:02 pm

    hi i have just bought this pattern.

    How do you treble crochet into the base of the chain 2 when the instructions are turn and chain 3

    • Sarah-Jayne
      February 24, 2019 at 2:34 pm

      Hi Joanne, have you watched the videos that goes along side the pattern? It will show you what to look for when doing the stitch 🙂

      • Amanda
        March 16, 2021 at 6:55 pm

        Hi want to make this blanket. Very much a begginer. Love your there avideo which goes along with this blanket pattern? Amanda

        • BellaCocoTeam
          March 18, 2021 at 2:48 pm

          Hi Amanda I do not have a video or this blanket, however it’s only treble crochet so maybe you could have a go at following the written pattern. Good luck 🙂

  • Val
    October 16, 2019 at 10:07 am

    Thank you for the pattern… off work as I tumble downstairs and have broken my leg so will have a go

    • BellaCocoTeam
      October 17, 2019 at 10:51 am

      Oh no Val I hope you get better soon and enjoy the time off work to do lots and lots of crochet lol 🙂

  • Pauline
    June 15, 2020 at 9:01 am

    Dear Sarah-Jayne, I have taken up crochet during lockdown and have been massively inspired by your website, your YouTube videos have been a godsend! I have chosen this blanket as my first proper project and decided to double it so it could properly wrap around a person so I bought 2 of each colour. I understand doubling the foundation chain from 70 to 140 but not sure I understand doubling the rows. Won’t doubling the chain and crochet 12 rows of each colour use all the yarn? Should I have bought more yarn? Will it look wrong if I just double to chain length but not the rows?

    • BellaCocoTeam
      June 16, 2020 at 2:19 pm

      Hi Pauline

      Thank you so much, it makes me really happy to know you’ve found my videos and website helpful As long as you have bought twice the yarn for this project then you shouldn’t run out by doubling the rows. If you want to keep just four blocks of colour then just double the number of rows from 12 to 24. Another option would be to keep 12 rows as in the pattern, but then repeat the whole colour sequence again so you have eight colour blocks. Hope this helps

      • Pauline
        June 16, 2020 at 3:40 pm

        oh yes I like this, thank you! I swapped the white for a meadow green (children with grubby hands don’t go well with white) and will post the outcome on insta for sure!


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