Boo Blocks Crochet Halloween Decor
Add a ghostly greeting to your Halloween decor with these Boo Blocks! Display them on a shelf, or hang them on the wall. The sleeves work up fast, and wrap securely around wooden blocks, or any blocks of similar size. They come off easily too, so after Halloween you can replace them with other letters or designs.

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Wood Blocks
Global Backyard Industries gave me the original blocks for this design, which were 1 5/8″ deep. Unfortunately, those blocks are no longer available. I have since modified the pattern to fit 2″ deep blocks instead, which are more readily available. You can find many options on Amazon, meant for carving or painting.
You can also make your own blocks from plastic canvas by cutting panels to size and sewing them together. You’ll need a 4″ square panel for the front and 4 panels at 4″ x 2″ for the top, bottom, and sides. You can add another 4″ square panel for the back if desired, or leave the back open.
Lion Brand Vanna’s Choice Yarn
The sample is shown in Lion Brand Vanna’s Choice yarn, #135 Rust & #173 Dusty Green, which I received free from Lion Brand. This sturdy, acrylic yarn comes in a wide selection of colors to match your Halloween decor, or for any other time of year.
Make the Whole Alphabet!
Want to spell out a different message? Choose any letters you like with these Alphabet Letter Charts! All of them will work with this pattern.
Materials
- Yarn: Lion Brand Vanna’s Choice – 100% acrylic, worsted-weight yarn; (170 yds / 3.5 oz / 100 g per skein for solid colors)
- 75 yds color A (shown in #135 Rust)
- 75 yds color B (shown in #173 Dusty Green)
- Hook: Size H / 5 mm crochet hook or size needed to match gauge
- Notions:
- 4 wood blocks, 4″ x 4″ x 2″ each
- Scissors
- Tapestry needle
Project Level
Intermediate: Charted colorwork, some working into front loops only.
Size
Fits 4″ x 4″ x 2″ blocks
Gauge
13 sc x 16 rows = 4 inches. Use pattern as gauge swatch – After round 1 of sides, work should just cover the front of the 4-inch block.
Abbreviations used
This pattern uses US terms.
| AC | accent color |
| ch | chain |
| dc | double crochet |
| MC | main color |
| rnd | round |
| RS | right side(s) |
| sc | single crochet |
| sl st | slip stitch |
| st(s) | stitch(es) |
Recommended Resources:
Instructions
Make 4 total blocks: 1 “B”, 2 “O”s, and 1 exclamation point. For even yarn usage, alternate which color is main and which is accent between blocks. For example, the sample shows two blocks with orange as MC and green as AC, and 2 blocks with green as the MC and orange as AC.
Front
Foundation Chain: With MC ch 13.
Row 1 (RS): Sc in 2nd ch from hook and each sc across.
Rows 2-14: Ch 1, turn, sc in each st across, changing colors according to letter chart (see below) for the letter/symbol you are making.
Sides
Sides are worked in turned rounds – it is important to turn your work with every round. Ch 3 at the start of a round counts as first dc throughout.
Rnd 1 (RS): With MC, ch 1, turn, sc in each st across top; working in sides of rows, work 12 sc evenly spaced across side; working in bottom of foundation chain, sc in each ch across; working in sides of rows, work 12 sc evenly spaced across other side, join with sl st to back loop only of first st. (48 sc)
Rnd 2: Ch 3 (counts as dc now and throughout), turn, working in front loop only, dc in next st and each st around, join with sl st to first st. (48 dc)
Rnds 3-5: Ch 3, turn, working in both loops as normal, dc in next st and each st around, join with sl st to first st. (48 dc)
Adjust depth as needed to fit your blocks by working more or fewer repeats of Rnd 3.
Rnd 6: Sl st in next 3 sts, ch 4, turn, (sk next 6 sts, sl st in next 6 sts, ch 4) 3 times, sk next 6 sts, sl st in next 5 sts. Fasten off. (4 corner loops)

Finishing
Weave in ends.
Insert block, starting at one corner and working your way around (it will be tight).
Repeat instructions for the other 3 blocks, to spell the word BOO!
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