Beginner-Friendly Crochet Harmony Square Afghan Block — Free Step-by-Step Pattern

The Crochet Harmony Square Afghan Block is a beginner-friendly, made-in-the-round square that highlights color changes and textured post stitches to create a harmonious, decorative block. This pattern produces a 9in x 9in (approx.) square worked without turning and is ideal for making afghans, cushions or sampler blankets where you can mix and match colors.

This versatile design lets you practice dc, hdc, sc, and post stitches (fpdc/bpdc) while producing a neat square with defined corners. The sample shown uses Deramores Studio Aran in Emerald (Colour A) and Juniper (Colour B) with a 5mm hook.

Harmony Square Afghan Block in Emerald and Juniper — finished 9in square showcasing front and back post stitch texture.

Skill Level: Beginner

Terms: US Terms

Materials used:

• Deramores Studio Aran
• Colour A – Emerald 26g 16m/15yds
• Colour B – Juniper 19g 12m/11yds
• Hook: 5mm
• Other items: Scissors, darning needle, stitch marker

Gauge: 17dc x 6 rows

Size: 9ins x 9ins

Stitches used:

• Chain – ch
• Single Crochet – sc
• Half Double Crochet – hdc
• Double Crochet – dc
• Slip Stitch – sl-st
• Front Post Double Crochet – fpdc
• Back Post Double Crochet – bpdc
• Magic Ring – mr
• Beginning – beg

Notes:

• This pattern is made in the round without turning.
• Ch3 at the start of the round counts as a dc.
• Ch2 at the start of a round does NOT count as a hdc.
• Ch1 at the start of a round does NOT count as a sc.
• Stitch counts are included at the end of each round/row in brackets.
• Stitch counts on square rows are for a single side and do not include corners.
• From round 5 – corners are not included in the stitch count.
• From round 5 – the first stitch of the round is also the last stitch of the last corner and you will complete it when you finish the round.

Start:

MR

Ch3 (counts as a dc here and throughout), 11dc into the ring. Join to the top of the beginning ch3 with a sl-st. (12)

Round 1:

Ch3, dc into the same st, 2dc in each st around. Join to the top of the beg ch3 with a sl-st. (24)

Round 2:

Ch3, 2dc into the same st, dc in the next 3 sts, [3dc in the next st, dc in the next 3 sts], repeat round. Join to the top of the beg ch3 with a sl-st. (36)

Round 3:

Using Colour B

Ch3, 2dc in the same st, dc in the next 5 sts, [3dc in the next st, dc in the next 5 sts], repeat round. Join to the top of the beg ch3 with a sl-st. (48)

Round 4:

Ch3, [3dc in the next st, dc in the next 7 sts], repeat until 6 sts remain, dc in the next 6. Join to the top of the beg ch3 with a sl-st. (60)

Round 5:

Using Colour A

Join with a sl-st in any st.

Ch3 – (this is the beginning of the corner which you will finish at the end of the round), dc in the next 2, hdc in the next 2 sts, sc in the next 6, hdc in the next 2, dc in the next 2, [(dc, ch1, dc in the next), dc in the next 2, hdc in the next 2, sc in the next 6, hdc in the next 2, dc in the next 2] around, dc in the same st as beginning ch3, ch1, join to the top of the beg ch3 with a sl-st.

(4dc, 4hdc, 6sc per side, not including corners)

Round 6:

Ch3 –(this is the beginning of the corner which you will finish at the end of the round), hdc in the next 3, sc in the next 8, hdc in the next 3, dc, (dc, ch1, dc in the ch1 sp), [dc, hdc in the next 3, sc in the next 8, hdc in the next 3, dc, (dc, ch1, dc in the ch1 sp)], repeat 3 times, join to the top of the beg ch3 with a sl-st. (2dc, 6hdc, 8sc per side, not including corners)

Round 7:

Ch3 –(this is the beginning of the corner which you will finish at the end of the round), [dc in each st to the ch1 sp, (2dc, ch1, 2dc in the ch1 sp)], repeat to the last ch1 sp, dc in the next st, ch1, join to the top of the beg ch3 with a sl-st. (18dc per side)

Round 8:

Using Colour B

Join in any corner with sl-st. Ch3 – (this is the beginning of the corner which you will finish at the end of the round), dc in the ch1 sp, bpdc in each st, [(2dc, ch1, 2dc in the ch1 sp), bpdc in each st], repeat 3 times, 2dc in the ch1 sp, ch1, join to the top of the beg ch3 with a sl-st. (22 bpdc per side)

Round 9:

Ch2 (does not count as a st), hdc in the same st, [hdc in every st across, (2dc, ch1, 2dc in the ch1 sp)], repeat 4 times. Join to the top of the beg hdc with a sl-st. (26 hdc per side)

Round 10:

Using Colour A

Join in any corner with a sl-st. Ch3, dc in the ch1 sp, bpdc in every st across, [3dc in ch1 sp, bpdc in every st across], repeat 3 times, dc in ch1 sp, join to the top of the beg ch3 with a sl-st. (30 bpdc per side)

Round 11:

Ch1 (does not count as a st), sc in the same st, hdc in the next 30 sts, [3sc in the next st, hdc in the next 30], repeat 3 times, 2sc in the same st as the beg sc, join to the top of the beg sc with a sl-st. Tie off and secure all ends.

Finishing tips: Gently block each square to bring it to the stated size and even the stitches if necessary. Weave in ends neatly on the wrong side with a darning needle. When joining multiple squares, maintain consistent tension and consider using a seaming method that highlights or hides join seams depending on your project.