Free Grandma’s Lattice Quilt Pattern

Pattern Description:

This free pattern is for Grandma’s Lattice Quilt, a generous 77’’ x 77’’ size throw quilt. It is a beautiful modern traditional patchwork quilt that is both jelly roll and fat quarter friendly. 

The construction uses a fast and easy strip piecing method to create 9-patch blocks that are combined with background squares to form 18 blocks total.

Materials Needed & Measurements:

The finished quilt size is 77’’ x 77’’. A scant 1/4’’ seam allowance should be used.

Required Materials:

• Background Fabric:2 1/4 yards (40-42” wide).
  • Note: The example quilt used Kona Snow for the background.

Coordinating Fabrics (Choose One Option):

• Jelly Roll Option:1 jelly roll strip bundle + 9 more strips (for a total of 51 strips, each 2 1/2” x 42”).
  • Alternatively, if using pre-cut jelly roll strips: 51 strips, each 2 1/2” x 42”.
• Fat Quarter Option:15 fat quarters of coordinating cotton quilting fabric.
  • If using fat quarters, cut: 102 strips, each 2 1/2” x 21”.
• Yardage Option: 3 3/4 yards TOTAL of different coordinating cotton fabrics, cut into 2 1/2” x 42” strips.

Finishing Materials:

• Backing Fabric:5 yards.
  • Must be cut and sewn together to make a piece at least 81 1/2’’ x 81 1/2’’.
• Binding Fabric:3/4 yards.
  • Cut: 8 strips 2 1/2’’ x width of fabric (or your desired binding size).
• Batting: A piece at least 81’’ x 81’’.

Instructions for Making Grandma’s Lattice Quilt Pattern:

Preparation and Cutting Instructions

The 77’’ x 77’’ quilt requires the construction of 18 total blocks.

• Background Fabric: From the 2 1/4 yards of background fabric (such as Kona Snow, used in the example quilt), cut 72 squares measuring 6 1/2” x 6 1/2”.
• Coordinating Strips: Prepare the strips from your coordinating fabrics (3 3/4 yards total, or 15 fat quarters, or 51 jelly roll strips).
  • If using yardage or pre-cut jelly roll strips, you will need 51 strips, each 2 1/2” x 42”.
  • If using fat quarters, cut 102 strips, each 2 1/2” x 21”.
• Binding Fabric: From the binding fabric (3/4 yards), cut 8 strips 2 1/2’’ x width of fabric (or your desired binding size).
• AccuQuilt Option: If utilizing an AccuQuilt fabric cutter, the suggested dies are the 2 1/2” strip die 55017 and the 6” finished square 55000.

Making the Nine-Patch Blocks (Using Strip Piecing)

This pattern utilizes a fast and easy strip piecing technique. You will need to create 90 nine-patch blocks in total, as each finished quilt block requires five 9-patch blocks.

• Prepare Strip Sets: Before sewing, sort all of your coordinating strips into sets of three strips that look pleasing together.
• Sew Sets: Place two fabric strips right sides together. Sew along one long edge using a scant 1/4” seam allowance. Open the strips and sew the third strip to the set, again using a scant 1/4” seam.
• Press: Press both seam allowances in the same direction. Repeat this process to create:
  • 34 strip sets if using 21” long fabric strips.
  • 17 strip sets if using 42” long fabric strips.
• Sub-Cut Pieces: Sub-cut each resulting strip set into 2 1/2” wide pieces. Discard selvages and any leftover scraps.
  • A 21” long strip set should yield 8 pieces.
  • A 42” long strip set should yield 16 pieces.
  • Cut all strip sets into 6 1/2” x 2 1/2” pieces until you have 270 pieces total.
• Assemble Nine-Patches: Select three pieces that coordinate well. Sew the three pieces together with a scant 1/4” seam to form one 9-patch block. Press the seams to one side or open, as desired. Repeat this step to construct 90 nine-patch blocks.

Assembling the Quilt Blocks

You must construct 18 total Grandma’s Lattice Quilt Blocks, each finishing at 18 1/2” x 18 1/2”.

• Gather Components: For each block, gather five 9-patch blocks and four 6 1/2” x 6 1/2” background fabric squares.
• Arrange: Arrange these nine pieces in a pleasing manner.
• Sew Rows: Sew the squares together to create three rows.
• Complete Block: Sew the three rows together to complete the 18 1/2” x 18 1/2” quilt block. Repeat this process until all 18 blocks are made.

Cutting Blocks for On-Point Assembly

Five of the finished quilt blocks must be cut to create the edge and corner pieces needed for the on-point arrangement.

• Cut 4 of the finished quilt blocks in half diagonally.
• Cut 1 of the finished quilt blocks in quarters diagonally.

Quilt Top Assembly on Point

• Arrange Blocks: Arrange the whole square blocks in diagonal rows according to the Quilt Assembly Diagram.
• Place Triangles: Place the half-block triangle pieces (cut in Step IV.1) along the edges of the arrangement. Place the quarter-block triangle pieces (cut in Step IV.2) at the corners.
• Sew Diagonal Rows: Sew the blocks and triangle pieces together in diagonal rows. When attaching a triangle piece to a block, align the square corners and begin sewing there, noting that the triangles are slightly smaller than the blocks.
• Finish Quilt Top: Sew the completed rows together to finish the quilt top. Trim the edges to square the quilt if necessary.

Finishing Grandma’s Lattice Quilt

• Prepare Backing: Cut the 5 yards of backing fabric in half and sew them together. The resulting backing piece must be at least 81 1/2’’ x 81 1/2’’.
• Baste: Sandwich the quilt top, the backing, and the batting (which should be at least 81’’ x 81’’) together. Baste the quilt layers using your preferred method, such as pin basting or fusible batting.
• Quilt: Quilt the top as desired.
• Bind: Sew the 8 strips of binding fabric (2 1/2’’ x width-of-fabric) together using diagonal seams. Bind the quilt using your preferred method.

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