Half Hexagon Crochet Pattern for a Straight Edge

This free half hexagon crochet pattern fills the large half-hexagon-shaped spaces that form along the sides of a rectangular granny hexagon blanket. Adding these half motifs creates a straighter foundation for your border instead of leaving deep valleys between the full hexagons.

The pattern is designed to coordinate with my Granny Hexagon Crochet Pattern. Unlike the full hexagon, which is worked in rounds, the half hexagon is crocheted in rows.

Do not turn after completing a row. Fasten off the yarn and join the next color at the beginning of the previous row so every row is worked with the right side facing you.

If you are making the complete blanket, follow my Hexagon Crochet Blanket Pattern for the motif layout, joining instructions, and border information.

Crochet half hexagon joined to full hexagons to create a straight blanket edge

Half Hexagon Crochet Pattern

Pattern Details

Skill level: Easy
Yarn: Worsted-weight yarn
Hook: 5 mm (US H-8)
Finished size: Varies depending on your yarn, hook, and tension; designed to coordinate with the three-round granny hexagon motif
Construction: Worked from the center outward in four rows
Gauge: Not essential, but the half motifs should fit evenly between your full hexagons
Joining: Row 4 may be worked normally for seaming or used with the join-as-you-go method

Supplies

Small amounts of worsted-weight yarn in three colors
Small amount of worsted-weight yarn in a fourth color for joining
5 mm (US H-8) crochet hook
Yarn needle
Scissors

Resources and tutorials you may find helpful in following this crochet pattern include Crochet Abbreviations, the U.S. to U.K. Crochet Conversion Chart, and Standing Stitches in Crochet.

❤️ this pattern on Ravelry.

Crochet Abbreviations

CA = color A
CB = color B
CC = color C
CD = color D
ch = chain
dc = double crochet
rep = repeat
sc = single crochet
sp(s) = space(s)
st(s) = stitch(es)

This pattern is written in U.S. crochet terms.

Pattern Notes

The half hexagon is worked in rows rather than rounds.
Do not turn after completing a row.
Fasten off after every row and join the next color in the first stitch of the previous row.
Work each row with the right side facing you.
The beginning ch-3 counts as the first dc.
The beginning ch-1 in Row 4 does not count as a stitch.
You can replace the beginning ch-3 in Rows 1 through 3 with a standing double crochet for a cleaner finish.
Use one color throughout or change colors after each row.
The number of half hexagons required will depend on the size and arrangement of your project.
This motif may also be called a half granny hexagon or half hexagon granny square.

How to Crochet a Half Hexagon

Row 1

With CA, ch 4.

Working in the farthest ch from the hook, work [1 dc, ch 1, 2 dc, ch 1, 2 dc]. The skipped 3 chs count as the first dc.

Fasten off CA. Do not turn — 6 dc and 2 ch-1 sps.

Row 1 of the half hexagon crochet pattern

Row 2

Join CB in the first st of the previous row, which is the top of the beginning ch-3.

Ch 3 (counts as a dc) and work 1 dc in the same st. *Ch 1 and work [2 dc, ch 1, 2 dc] in the next ch-sp; rep from * once more. Ch 1 and work 2 dc in the final st.

Fasten off CB. Do not turn — 12 dc and 5 ch-sps.

Row 2 of the half hexagon crochet pattern

Row 3

Join CC in the first st of the previous row.

Ch 3 (counts as a dc) and work 1 dc in the same st. *Ch 1, work 2 dc in the next ch-sp, ch 1, and work [2 dc, ch 1, 2 dc] in the next ch-sp; rep from * once more. Ch 1, work 2 dc in the next ch-sp, ch 1, and work 2 dc in the final st.

Fasten off CC. Do not turn — 18 dc and 8 ch-sps.

Row 3 of the half hexagon crochet pattern

Adding the Joining Edge

For my Granny Hexagon Afghan, I joined the motifs while working the fourth round with my Join-As-You-Go Granny Hexagon Method.

You can join the half hexagons in the same way while working Row 4. If you prefer to seam your motifs together, complete Row 4 on each half hexagon and use your preferred joining method afterward.

Row 4

Join CD in the first st. Ch 1 (does not count as a st) and work 1 sc in the same st.

*Ch 2, work 1 sc in the next ch-sp, ch 2, work 1 sc in the next ch-sp, ch 2, and work [1 sc, ch 1, 1 sc] in the next ch-sp; rep from * once more.

Ch 2, work 1 sc in the next ch-sp, ch 2, work 1 sc in the next ch-sp, ch 2, and work 1 sc in the final st.

Fasten off — 12 sc and 11 ch-sps.

Completed half hexagon with an edging for joining

Finishing the Half Hexagon

Weave in all the yarn ends securely.

If necessary, lightly block the finished half hexagons so they match the height and width of the spaces between your full motifs.

Join each half hexagon in one of the large valleys along the appropriate sides of your blanket. Once they are in place, you will have a much straighter edge to finish with a border.

What About the Smaller Valleys?

The half hexagons fill the large spaces along a rectangular hexagon layout, but you may still notice smaller V-shaped valleys along the perpendicular edges of your blanket.

You can leave these points as a decorative feature or fill them in with my Granny Hexagon Crochet Edging Pattern. That edging is designed to fill the smaller valleys before you add the final border rounds.