Four Leaf Clover Quilt Block Pattern

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How to Sew a Four Leaf Clover Quilt Block

The Four Leaf Clover quilt block creates a charming clover design using green fabric triangles arranged on a light background — a fun and cheerful block for any quilt project.

Materials Needed

• Green fabric for the clover leaves
• White or off-white fabric for the background
• Rotary cutter and cutting mat
• Ruler
• Sewing machine and thread
• Iron and ironing board

Cutting Guide

• Four 4½" × 4½" green squares (clover leaves)
• One 9" × 9" white or off-white square (background)

Step-by-Step Instructions

1. Fold one green square in half diagonally, right sides facing each other.
2. Sew along the diagonal edge with a ¼" seam allowance.
3. Trim the excess fabric, leaving a ¼" seam allowance. Press the seam open.
4. Repeat steps 1–3 with the remaining three green squares to make four green triangles.
5. Lay out the four green triangles on top of the background square, forming a clover shape.
6. Sew the triangles together with a ¼" seam allowance. Press the seams open.
7. Trim any excess fabric from the edges of the block, leaving a ¼" seam allowance.
8. Repeat to make as many Four Leaf Clover blocks as needed.
9. Assemble the quilt top by sewing the blocks together with a ¼" seam allowance. Press seams open.
10. Layer the quilt top with batting and backing fabric, quilt as desired, then bind the edges to finish.

And there you have it — a beautiful Four Leaf Clover quilt block!

Half-Square Triangle (HST) Technique

This technique eliminates the need to directly manipulate the stretchy bias of the triangle. It uses two easy-to-cut squares and produces two HSTs at once.

Step 1: Draw the Diagonal Line

On the back of the lighter fabric, draw a pencil line diagonally from corner to corner.

Step 2: Sew Both Sides of the Line

Stack a pair of light and dark squares right sides together. Sew a ¼" seam allowance on each side of the line.

You will end up with something like this:

Step 3: Cut Along the Diagonal Line

Step 4: Press the Seam

Press the seam together to set it, then press toward the darkest fabric.

Step 5: Trim to Size

Line up the 45° diagonal angle on your ruler with the seam, then carefully trim with a rotary cutter.

How to Resize Quilt Blocks

The first step in modifying any quilt block is to decide on your finished block size. You can base this on doubling a pattern, cutting it in half, or working with your available fabric.

Note: When working from a pattern's cutting instructions, remove the seam allowance before scaling. For example, if your pattern calls for 3½″ squares, subtract the seam allowance (½″), double the finished size (3″ → 6″), then add the seam allowance back (½″) — giving you a 6½″ cut piece.

Resizing Square Blocks

Add ½″ to your finished block measurement. For a 4″ finished square, cut a 4½″ square of fabric.

Resizing Rectangular Blocks

Add ½″ to both the length and width. To double a 3″ × 4″ block, cut a 6½″ × 8½″ rectangle.

Resizing Half-Square Triangle Blocks

Add 7/8″ to the desired finished block size. For a 4″ finished HST block, cut 4⅞″ squares.

Resizing Quarter Square Triangle Blocks

Add 1¼″ to the desired finished block size. For a 4″ finished block, cut 5¼″ squares.