Introduction
A sixteen-window lattice has to stay square before the scalloped blue frame is allowed to expand around it. This blue and cream lattice granny square crochet bedspread pattern combines a structured cream grid with a dusty-blue decorative border to create the geometric bed covering shown in the photo. Use medium-weight yarn and a 4.5–5.0 mm hook, targeting approximately 18–20 cm for each blocked motif.
The Design: What Makes This Lattice Square Different
The central feature is not a conventional granny cluster. Each motif contains a cream window grid arranged as approximately four openings across and four openings down. A dense cream frame stabilizes that lattice before the color changes to dusty blue.
The blue section provides most of the decorative character. Small arches surround the cream center, followed by larger scalloped shells that soften the otherwise geometric construction. When multiple blocks are joined, those blue scallops create a secondary lace pattern between squares.
The main technical problem is distortion. An open lattice stretches much more readily than its dense frame. For that reason, the center is made and measured first, the cream perimeter is added second, and the decorative blue rounds are worked only after the center is square.
Project Info at a Glance
| Skill Level | Construction | Target Motif | Hook | Best For |
|---|---|---|---|---|
| Intermediate | Cream lattice center with blue scalloped frame | 18–20 cm | 4.5–5.0 mm | Bedspreads, throws and pillow covers |
Materials and Tools
Yarn
- Warm cream — medium/worsted #4 — lattice centers and structural frames
- Dusty blue-gray — medium/worsted #4 — decorative arches, scallops, joining accents and outer border
Use yarns with similar thickness and elasticity. A smooth cotton, cotton blend or low-fuzz acrylic gives the lattice intersections clearer definition.
Tools
- 4.5–5.0 mm crochet hook
- Yarn needle
- Scissors
- Locking stitch markers
- Tape measure
- Blocking mats
- Rust-resistant pins
- Digital scale for yarn calculations
Abbreviations
- ch — chain
- sl st — slip stitch
- sc — single crochet
- hdc — half double crochet
- dc — double crochet
- tr — treble crochet
- sp — space
- st/sts — stitch/stitches
- RS — right side
- WS — wrong side
- FO — fasten off
Pattern — Step by Step
This is an original photo-inspired construction. Make one complete master motif first. Block and measure it before producing the remaining squares.
Cream Lattice Center
The center is worked as a small filet-style grid containing 4 openings across and 4 openings vertically.
Foundation
With cream, ch 14.
Row 1
Dc in the fourth ch from the hook.
Work:
*ch 2, skip 2 ch, dc in next ch*
across.
Adjust the final placement so the row contains 4 open cells bounded by five vertical posts.
Turn.
Row 2
Ch 3.
Dc in the next dc.
Work:
*ch 2, dc in next dc*
across.
Turn.
Rows 3–5
Repeat Row 2.
After Row 5, the center should contain approximately 4 × 4 open windows.
Do not fasten off.
Checking the Lattice
Lay the center flat without stretching it.
The individual openings should appear approximately square.
Measure the complete lattice horizontally and vertically.
Keep the difference within approximately 5 mm.
If the center is substantially taller than it is wide, reduce the turning-chain height or move down 0.5 mm in hook size.
Cream Perimeter — Round 1
Continue with cream.
Ch 1.
Work sc evenly around the complete lattice.
Place approximately 2 sc around each dc row end along the vertical edges, adjusting only enough to keep the center flat.
At each corner work:
(sc, ch 2, sc).
Join.
Cream Perimeter — Round 2
Ch 2.
Hdc in every stitch.
At each corner ch-2 space work:
(2 hdc, ch 2, 2 hdc).
Join.
Cream Perimeter — Round 3
Ch 1.
Sc in every stitch.
At each corner work:
(2 sc, ch 2, 2 sc).
Join.
Raised Cream Frame
Ch 2.
Work hdc in the back loop of every stitch.
At each corner work:
(2 hdc, ch 2, 2 hdc).
Join.
The unused front loops create a narrow ridge around the lattice center similar to the defined cream frame visible in the reference.
FO cream.
Blue Openwork Round
Join dusty blue-gray at one corner.
Ch 1.
In the corner work:
(sc, ch 3, sc).
Across each side repeat:
ch 3, skip 2 sts, sc in next st.
At the next corner work:
(sc, ch 3, sc).
Continue around.
Join.
Blue Scallop Round
Sl st into the first ch-3 space.
Into each side ch-3 space work:
(sc, hdc, 3 dc, hdc, sc).
Repeat around.
At each corner ch-3 space work:
(sc, hdc, 5 dc, hdc, sc).
Join.
Second Blue Openwork Round
Sl st to the top of the first scallop.
Work:
*sc at scallop tip, ch 4, sc at next scallop tip*
around each side.
At each corner use ch 5 instead of ch 4.
Join.
Outer Blue Shell Round
Sl st into the first ch-4 space.
Into each ch-4 space work:
(sc, hdc, 4 dc, hdc, sc).
Into each corner ch-5 space work:
(sc, hdc, 6 dc, hdc, sc).
Repeat around.
Join.
Structural Joining Round
The decorative shells should not be used as the only joining surface.
Turn the motif to the wrong side.
Join blue behind the shell round at one corner.
Work a relaxed round of sc into the structural loops behind the shells.
At each corner work:
(sc, ch 2, sc).
Join and FO.
This hidden round provides a stable edge for joining while allowing the visible scallops to remain free.
Target Motif Size
Block the complete square to approximately 18–20 cm.
The exact dimension depends on yarn, hook and lattice tension. Treat this measurement as the target for this project rather than a universal size.
If the motif is smaller, add one structural blue hdc round behind the scallops before the final joining round.
Blocking the Master Square
Pin the cream lattice first.
Check that the 16 central openings remain visually square.
Pin the four structural corners next.
Measure both diagonals.
Keep the difference between them within approximately 5 mm.
Shape the blue scallops last.
Master Motif Measurements
Record these measurements before beginning production:
- Overall width
- Overall height
- Diagonal A
- Diagonal B
- Cream center width
- Cream center height
- Complete motif weight
Making the Remaining Squares
Work in batches for better consistency.
Make several cream lattice centers first.
Compare their dimensions before adding the cream frames.
Next complete the blue rounds.
Compare every fifth finished square with the blocked master.
Keeping the Lattice Square
The open center can stretch diagonally while being handled.
Do not judge its shape while holding it by one corner.
Place the motif on a flat surface and measure it without tension.
The cream perimeter should control the grid before the blue scallops are added.
Bedspread Layout
If each blocked motif measures 19 cm, approximate dimensions are:
| Grid | Total Squares | Approximate Size Before Outer Border |
|---|---|---|
| 5 × 6 | 30 | 95 × 114 cm |
| 6 × 8 | 48 | 114 × 152 cm |
| 8 × 10 | 80 | 152 × 190 cm |
| 9 × 11 | 99 | 171 × 209 cm |
| 10 × 12 | 120 | 190 × 228 cm |
| 11 × 13 | 143 | 209 × 247 cm |
Add the final border depth separately.
Planning Mattress Coverage
Measure the mattress instead of relying only on a standard bed-size label.
For a 160 cm wide mattress with a 30 cm side drop:
160 + 30 + 30 = 220 cm.
At 19 cm per motif:
220 ÷ 19 = approximately 11.6.
Twelve columns produce a motif field approximately 228 cm wide before the outer border.
Estimating Yarn
Weigh one completely finished and blocked motif.
Suppose the master square weighs 60 g.
For an 80-square bedspread:
60 × 80 = 4,800 g.
Add yarn for joining and the outside border.
Then add approximately 10% for swatching, tension variation and repairs.
The 60 g figure is an example only. Replace it with the measured weight of your square.
Calculating Yarn by Color
Weigh each color before and after one master motif.
For example, if one square uses:
- Warm cream — 25 g
- Dusty blue-gray — 35 g
then 80 motifs would require approximately:
- Warm cream — 2,000 g
- Dusty blue-gray — 2,800 g
Add separate blue yarn for joining and the outer border. These figures demonstrate the calculation method rather than fixed yarn requirements.
Arranging the Squares
Block every motif before assembly.
Lay the squares on a large flat surface.
Orient all cream lattices in the same direction.
Check the blue scallops where four squares meet.
Photograph the complete layout before stacking the motifs into rows.
Joining the Squares
Use dusty blue-gray yarn.
Work into the hidden structural joining round rather than through the tips of the decorative scallops.
Place two motifs right sides upward.
Match their corners.
Slip stitch corresponding loops from one corner to the next.
Testing Seam Tension
Stop after approximately 5 cm.
Lay both motifs flat.
The seam should not shorten the blocked edge.
If the joined squares pull toward one another, work more loosely or use a hook approximately 0.5 mm larger for joining.
Keeping the Scallops Free
Pull the visible blue shells away from the seam as you work.
Do not trap their outer edges in the joining stitches.
Once joined, the scallops should overlap visually while the hidden structural rounds carry the actual seam tension.
Joining Horizontal Rows
Join all motifs into horizontal rows first.
Measure every completed row.
Rows containing the same number of motifs should remain within approximately 1 cm of one another.
Correct a contracted seam before joining the rows vertically.
Joining the Rows Vertically
Place two completed rows beside one another.
Match every square intersection.
Join using the same structural loops.
At each four-square intersection, use one compact connection through the corresponding corner spaces.
Outer Bedspread Border — Round 1
Join dusty blue-gray at one outer corner.
Work sc evenly around the complete bedspread.
At each corner work:
(2 sc, ch 2, 2 sc).
Join.
Border Round 2
Ch 2.
Hdc in every stitch.
At each corner work:
(2 hdc, ch 2, 2 hdc).
Join.
Border Round 3 — Openwork
Ch 1.
Sc in the first stitch.
Repeat:
ch 3, skip 2 sts, sc in next st.
At each corner use one ch-5 space.
Join.
Border Round 4 — Blue Scallops
Into each side ch-3 space work:
(sc, hdc, 4 dc, hdc, sc).
Into each corner ch-5 space work:
(sc, hdc, 7 dc, hdc, sc).
Repeat around.
Join.
Border Round 5 — Final Definition
Work one relaxed sl st into each stitch around the outside of the scallops.
At each scallop tip, work:
sl st, ch 1, sl st.
Continue around.
FO.
Optional Cream Accent Border
For additional contrast, insert one cream sc round between Border Rounds 2 and 3.
At every corner work:
(sc, ch 2, sc).
FO cream and return to blue for the openwork border.
Matching Lattice Pillow Cover
The reference pillows enlarge the same cream-grid and blue-scallop language.
For a modular pillow, join four standard motifs in a 2 × 2 arrangement.
Add blue framing rounds until the panel matches the cushion insert.
Single Large Lattice Pillow
For a closer match to the photographed pillows, make one enlarged cream grid.
Target approximately 25–28 cm for the central lattice.
Increase the number of filet cells while maintaining approximately square openings.
Add a dense cream frame followed by multiple dusty-blue scalloped rounds.
Pillow Front Size
For a 45 cm cushion insert, target a finished crochet panel approximately 44–45 cm square before assembly.
Block the panel before measuring.
Do not stretch the open lattice to reach the required dimension.
Plain Pillow Back
With dusty blue-gray, chain to the width of the blocked pillow front.
Row 1: Hdc in the third chain from the hook and across.
Row 2: Ch 2, turn, hdc across.
Repeat Row 2 until the panel matches the front.
FO.
Assembling the Pillow
Place front and back with wrong sides together.
Sc around three sides in dusty blue-gray.
Insert the cushion form.
Close the fourth side or add an envelope opening for a removable cover.
Alternative Colorway — Navy and Ivory
Replace dusty blue-gray with deep navy.
Keep the lattice warm ivory.
The stronger contrast emphasizes every square opening and produces a more graphic bedspread.
Alternative Colorway — Sage and Cream
Replace blue with muted sage green.
Keep the complete lattice and structural frame cream.
The same stitch construction can be retained if both yarns match the original gauge.
Alternative Colorway — Dusty Rose and Ivory
Use dusty rose for the scalloped frame and warm ivory for the lattice.
Keep joining yarn the same color as the scallops so the structural seams blend into the decorative framework.
Smaller Throw Version
Use a 6 × 8 grid of 19 cm motifs.
The field measures approximately 114 × 152 cm before the border.
This layout requires 48 squares.
Large Bedspread Version
A 10 × 12 arrangement uses 120 motifs.
At 19 cm per square, the motif field measures approximately 190 × 228 cm.
Add the outer border only after checking the mattress and required drop.
Assembly
- Crochet one cream 4 × 4 lattice center and check that its openings remain approximately square before adding the perimeter.
- Add the dense cream framing rounds, then measure the center horizontally and vertically and keep the difference within approximately 5 mm.
- Work the dusty-blue openwork and scalloped rounds while keeping the decorative shells independent from the hidden structural joining edge.
- Block the master motif to approximately 18–20 cm and keep its two diagonal measurements within approximately 5 mm.
- Make the remaining motifs in batches, comparing every fifth square with the master for overall size and cream-center dimensions.
- Arrange all blocked squares, photograph the complete layout and join them into horizontal rows through the hidden blue structural loops.
- Measure the completed rows, then join them vertically while keeping every four-square intersection compact and aligned.
- Work the first two structural border rounds and inspect the complete perimeter for waves or inward pulling before adding openwork.
- Add the blue scallop border, keeping the corner shells symmetrical and reshaping any compressed motif scallops along the seams.
- Weave all tails through dense structural stitches, complete a light final blocking and align the cream grids before shaping the blue shells.
The completed bedspread should form a regular field of cream window grids surrounded by dusty-blue scallops, with the joining structure hidden behind the decorative edges.
7 Technical Tips
- Keep the cream center’s width and height within approximately 5 mm. A rectangular lattice cannot be corrected reliably by stretching the later blue scallops.
- Keep the two finished-square diagonals within approximately 5 mm. Equal side measurements alone do not detect diagonal distortion in an open grid.
- Use stitch markers at all four corners before beginning the blue rounds. A misplaced corner shifts the scallop pattern and makes neighboring motifs difficult to align.
- Test each joining seam after approximately 5 cm. Tight slip stitches shorten the structural edge and force the decorative scallops to overlap excessively.
- Keep the blue shells outside the joining stitches. Trapping even one full scallop in a seam produces a visibly flat section beside the surrounding raised arches.
- Check the first outer border round every 30–40 cm. Too many perimeter stitches cause waves, while too few pull the bedspread corners inward.
- Weave structural tails through at least 6–8 cm of dense cream or blue crochet. Avoid weaving long ends through the open lattice because they remain visible across the square windows.
Care and Final Blocking
Follow the care instructions for the selected yarn. Support the bedspread across both arms when wet rather than lifting it from a single corner.
Lay the project flat and align the joined square grid first. Check the top, center and bottom widths, followed by both long sides.
Shape the cream lattice openings next. They should remain regular without being stretched aggressively.
Arrange the dusty-blue scallops last. Allow the complete bedspread to dry flat before folding or placing it on the bed.
Conclusion
The contrast between the rigid cream windows and soft blue shells defines this blue and cream lattice granny square crochet bedspread pattern. Begin with one 18–20 cm master motif, check the lattice before adding decorative rounds and record the blocked dimensions before making additional squares. Keep the scallops separate from the structural joining edge so the bedspread remains flat while the blue lace stays visible. For a large version, batch the cream centers first and add the blue rounds only after their measurements agree. Save the finished project to Pinterest or share it on Instagram with #BlueLatticeCrochetBedspread. Would you keep the dusty blue-gray frame or replace it with navy for stronger contrast?
